WHOLE LOAN PURCHASE AGREEMENT

      Whole Loan Purchase Agreement (the "Agreement"), dated as of December 23,
2003 between ABN AMRO Mortgage Group, Inc. (the "Seller") and Washington Mutual
Mortgage Securities Corp. (the "Purchaser").

      Subject to the terms and conditions of this Agreement, the Seller agrees
to sell and the Purchaser agrees to purchase certain mortgage loans (the
"Mortgage Loans") as described herein and as identified on the Mortgage Loan
Schedule defined in Section 2 hereof. The Mortgage Loans will be purchased on a
servicing released basis.

      Now, therefore, in consideration of the premises and the mutual agreements
set forth herein, the parties agree as follows:

SECTION 1. Purchase and Sale of the Mortgage Loans.

      (a) Pursuant to the terms hereof and upon satisfaction of the conditions
set forth herein, the Seller agrees to sell and the Purchaser agrees to
purchase, Mortgage Loans having the characteristics set forth in this Agreement
and specifically identified on the Mortgage Loan Schedule, for the Purchase
Price set forth below in Section 3(a) hereof and having an aggregate principal
balance on and as of December l, 2003 (the "Cut-Off Date") of approximately
$354,678,057 after deduction of principal payments due on or before the Cut-Off
Date (which amount may vary plus or minus 5% thereof), or such other aggregate
principal balance as agreed by the Purchaser and the Seller as evidenced by the
actual aggregate principal balance of the Mortgage Loans accepted by the
Purchaser on the Closing Date (as defined below).

      (b) Subject to mutual agreement between the Purchaser and the Seller, the
closing for the purchase and sale of the Mortgage Loans shall take place on
December 23, 2003 (the "Closing Date") at the office of Purchaser's counsel in
New York, New York or such other place as the parties shall agree.

SECTION 2. Mortgage Loan Schedule.

      Attached to this Agreement as Schedule 1 is a listing of the Mortgage
Loans evidenced by promissory notes, mortgage notes or other evidence of
indebtedness (the "Mortgage Notes") evidencing the indebtedness of one or more
obligors (the "Mortgagor") and the related mortgages, deeds of trust or other
instruments securing a Mortgage Loan (the "Mortgage") to be purchased by and
delivered to the Purchaser on the Closing Date (as such may be amended prior to
the Closing Date by mutual agreement of the parties) (the "Mortgage Loan
Schedule"). The "Mortgage Loan Schedule" as of the Closing Date shall refer to
the Mortgage Loan Schedule as delivered on the Cut-Off Date related to such
Mortgage Loans to be purchased by or on behalf of the Purchaser pursuant to the
terms of this Agreement. The Mortgage Loan Schedule shall contain as to each
Mortgage Loan listed thereon, at a minimum, the Mortgage Loan information
indicated on Schedule 2 hereto.

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SECTION 3. Purchase Price.

      (a) In exchange for the Mortgage Loans, on the Closing Date, the Purchaser
shall transfer to the Seller by wire transfer in immediately available funds the
purchase price (the "Purchase Price") which is equal to * % multiplied by the
principal balance thereof as of the Cut-Off Date plus any accrued and unpaid
interest thereon from the Cut-Off Date to the Closing Date.

      (b) The Purchaser shall be entitled to all scheduled payments of principal
and interest due with respect to the Mortgage Loans after the Cut-Off Date, and
all other recoveries of principal and interest collected after the Cut-Off Date
(other than in respect of principal and interest on the Mortgage Loans due on or
before the Cut-Off Date). The Seller shall be entitled to all scheduled payments
of principal and interest due with respect to the Mortgage Loans on or before
the Cut-Off Date, and all other recoveries of principal and interest collected
on or before the Cut-Off Date (other than in respect of principal and interest
on the Mortgage Loans due after the Cut-Off Date). The principal balance of each
Mortgage Loan as of the Cut-Off Date is determined after deduction of payments
of principal due on or before the Cut-Off Date whether or not collected.
Therefore, payments of scheduled principal and interest prepaid for a date due
following the Cut-Off Date shall not be deducted from the principal balance as
of the Cut-Off Date but such prepaid amounts shall belong to, and be promptly
remitted by the Seller to, the Purchaser.

SECTION 4. Examination of Mortgage Files.

      Prior to the Closing Date, the Seller will have made files for each
Mortgage Loan, that consist at least of the documents listed on Schedule 3
attached hereto (with respect to each Mortgage Loan, a "Mortgage File", and
collectively, the "Mortgage Files"), available to the Purchaser or its agents,
for examination at the Seller's offices or such other location as shall
otherwise be agreed upon by the Purchaser and the Seller. The Purchaser may
purchase all or part of the Mortgage Loans with or without conducting any
partial or complete examination. The fact that the Purchaser or its agents have
conducted or have failed to conduct any partial or complete examination of the
Mortgage Files shall not affect the Purchaser's rights under this Agreement,
including, but not limited to, the rights to demand repurchase, substitution or
other relief as provided in this Agreement.

SECTION 5. Transfer of Mortgage Loans; Possession of Mortgage Files.

      (a) On the Closing Date, subject to the satisfaction of the terms and
conditions hereof, the Seller shall sell, transfer, assign, set over and
otherwise convey to the Purchaser, without recourse, but subject to the terms of
this Agreement, all right, title and interest of the Seller in and to the
Mortgage Loans (including the servicing rights related thereto) and all proceeds
thereof, wherever located, including without limitation, all amounts in respect
of principal and interest received or receivable with respect to Mortgage Loan
payments due after the Cut-Off Date (and including scheduled payments of
principal and interest due after the Cut-Off Date but received by the Seller on
or before the Cut-Off Date, but not including payments of principal and interest
due on the Mortgage Loans on or before the Cut-Off Date), together with the
proceeds of any related

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      *     Provided upon request by ABN AMRO Mortgage Group, Inc.


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mortgage insurance policies. Such transfer shall be made directly to the
Purchaser in accordance with the letter delivered to the Seller by the Purchaser
attached hereto as Exhibit A (the "Instruction Letter"). The Seller's records
will accurately reflect the sale of each Mortgage Loan to the Purchaser.

      (b) The ownership of each Mortgage Loan (including the related servicing
rights) and the related Mortgage Note, the Mortgage and the contents of the
related Mortgage File shall be, upon satisfaction of subsection 3(a) hereof,
vested in the Purchaser and the ownership of all records and documents with
respect to such Mortgage Loan prepared by or which come into the possession of
the Seller shall immediately vest in the Purchaser and shall be retained and
maintained by the Seller at the will and for the benefit of the Purchaser in a
custodial capacity only. The Seller shall deliver to the Purchaser or its agent
in accordance with the instructions set forth in Exhibit A, simultaneously with
the execution and delivery of this Agreement or prior to the Closing Date, all
of the documents pertaining to each Mortgage Loan.

      (c) The transfer of the Mortgage Loans as described herein shall be
absolute and is intended by the parties to be a sale. In the event that a court
deems the conveyance set forth herein not to constitute a sale, the Seller shall
have granted to the Purchaser a first priority security interest in the Mortgage
Loans and in the proceeds thereof of any kind or nature whatsoever, and in the
proceeds of any related insurance policies, subject to the satisfaction or
waiver of the conditions set forth in Section 11 hereof, and shall take, or
shall cause to have been taken, all steps necessary prior to the Closing Date to
perfect such security interest in the Purchaser.

SECTION 6. Books and Records.

      On the Closing Date, following the sale of the Mortgage Loans to the
Purchaser, title to each Mortgage and the related Mortgage Note shall be
transferred to the Purchaser or its assignee in accordance with this Agreement.
All rights arising out of the Mortgage Loans after the Cut-Off Date including,
but not limited to, any and all funds received on or in connection with a
Mortgage Loan and due after the Cut-Off Date shall be received and held by the
Seller in a custodial capacity for the benefit of the Purchaser or its assignee
as the owner of the Mortgage Loans in accordance herewith and shall be delivered
or caused to be delivered by the Seller to the Purchaser or its assignee on or
immediately following the Closing Date. Any funds received by the Seller, the
Purchaser or the Servicer (as defined in the Pooling and Servicing Agreement,
dated as of December 1, 2003, among U.S. Bank National Association, as Trustee
(the "Trustee"), Washington Mutual Mortgage Securities Corp. as Seller and
Servicer (in such capacity, the "Seller" or the "Servicer") and ABN AMRO
Mortgage Corporation as Depositor (the "Depositor")) after the Cut-Off Date but
due prior to the Cut-Off Date shall remain the property of the Seller and shall
be promptly remitted to the Seller.

SECTION 7. Further Actions; Financing Statements.

      (a) The Seller hereby grants to the Purchaser, subject to the satisfaction
or waiver of the conditions set forth in Section 11 hereof, the right, at the
Purchaser's option, to file any or all such financing statements, amendments,
continuation statements, assignments, certificates and other documents pursuant
to the UCC and otherwise without its signature and hereby irrevocably appoints
the Purchaser, subject to the satisfaction or waiver of the conditions set forth
in Section 11 hereof, as its attorney-in-fact to execute, deliver and file any
such financing statements, amendments,

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continuation statements, assignments, certificates and other documents in the
Seller's name and to perform all other acts which the Purchaser deems
appropriate to perfect or to maintain the perfection of the security interest;
and (ii) notify the Purchaser within five (5) days after the occurrence of any
of the following: (A) any change in the Seller's corporate name or any trade
name; (B) any change in the Seller's location of its chief executive office or
principal place of business; and (C) any merger or consolidation or other change
in Seller's identity or material change in its corporate structure.

SECTION 8. Representations, Warranties and Agreements of Seller.

      (a) The Seller hereby represents and warrants to the Purchaser as of the
Closing Date (or such other date as is specified in the related representation
or warranty) as follows:

            (i) The Seller has been duly created and is validly existing and in
      good standing as a corporation under the laws of the State of Delaware;

            (ii) The execution and delivery of this Agreement by the Seller and
      its performance of and compliance with the terms of this Agreement will
      not violate the Seller's charter or by-laws and will not conflict with or
      result in a breach of any of the terms or provisions of, or constitute a
      default under, any indenture, mortgage, deed of trust, loan agreement or
      other material agreement or instrument to which the Seller is a party or
      by which the Seller or to which any of the property or assets of the
      Seller is subject;

            (iii) The Seller has all requisite corporate power, authority and
      capacity to enter into this Agreement and to perform the obligations
      required of it hereunder. This Agreement, assuming due authorization,
      execution and delivery by the Purchaser, constitutes a valid and legally
      binding obligation of the Seller, enforceable against the Seller in
      accordance with its terms, subject, as to enforcement, to bankruptcy,
      insolvency, reorganization and other similar laws of general applicability
      relating to or affecting creditors' rights and to general equity
      principles, regardless of whether such enforcement is considered in a
      proceeding in equity or at law. No consent, approval, authorization or
      order of or registration with, or notice to, any governmental authority or
      court is required, under state or federal law prior to the execution,
      delivery, performance of or compliance by the Seller with this Agreement
      or the consummation by the Seller with any other transaction contemplated
      hereby;

            (iv) The Seller is not in default with respect to any order or
      decree of any court or any order, regulation or demand of any federal,
      state, municipal or governmental agency, which default might have
      consequences that would materially and adversely affect the condition
      (financial or other) or operations of the Seller or its properties or
      might have consequences that would affect its performance hereunder;

            (v) No litigation is pending or, to the best of the Seller's
      knowledge, threatened against the Seller which would prohibit its entering
      into this Agreement or performing its obligations under this Agreement;


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<PAGE>


            (vi) The Seller is an approved conventional seller/servicer for FNMA
      or FHLMC in good standing;

            (vii) The consummation of the transactions contemplated by this
      Agreement are in the ordinary course of business of the Seller, and the
      transfer, assignment and conveyance of the Mortgage Notes and the
      Mortgages by the Seller pursuant to this Agreement is not subject to the
      bulk transfer or any similar statutory provisions in effect in the State
      of Michigan;

            (viii) With respect to each Mortgage Loan:

                  1) that the information set forth in the Mortgage Loan
            Schedule appearing as an exhibit to this Agreement is true and
            correct in all material respects at the date or dates respecting
            which such information is furnished as specified therein;

                  2) the Seller is the sole owner and holder of each Mortgage
            Loan free and clear of all liens, pledges, charges or security
            interests of any nature and has full right and authority, subject to
            no interest or participation of, or agreement with, any other party,
            to sell and assign the same and, upon the Seller's receipt of the
            Purchase Price, the Purchaser shall own and hold such Mortgage Loan
            free and clear of all liens, pledges, charges or security interests
            of any nature;

                  3) no payment of principal of or interest on or in respect of
            any Mortgage Loan is 30 days or more past due from the Due Date of
            such payment;

                  4) to the best of the Seller's knowledge, as of the date of
            the transfer of the Mortgage Loans to the Purchaser, there is no
            valid offset, defense or counterclaim to any Mortgage Note or
            Mortgage;

                  5) there is no proceeding pending, or to the best of the
            Seller's knowledge, threatened for the total or partial condemnation
            of any of the real property, together with any improvements thereto,
            securing the indebtedness of the Mortgagor under the related
            Mortgage Loan (the "Mortgaged Property") and the Mortgaged Property
            is free of material damage and is in good repair and neither the
            Mortgaged Property nor any improvement located on or being part of
            the Mortgaged Property is in violation of any applicable zoning
            law or regulation;

                  6) that each Mortgage Loan complies in all material respects
            with applicable state or federal laws, regulations and other
            requirements, pertaining to usury, equal credit opportunity,
            disclosure laws and all applicable anti-predatory laws, and each
            Mortgage Loan was not usurious at the time of origination;

                  7) to the best of the Seller's knowledge, all insurance
            premiums, water, sewer and municipal charges, leasehold payments and
            ground rents previously due and owing with respect to each Mortgaged
            Property have been paid and all taxes and


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<PAGE>

            governmental assessments previously due and owing, and which may
            become a lien against the Mortgaged Property, with respect to the
            Mortgaged Property have been paid;

                  8) that each Mortgage Note and the related Mortgage are
            genuine and each is the legal, valid and binding obligation of the
            maker thereof, enforceable in accordance with its terms except as
            such enforcement may be limited by bankruptcy, insolvency,
            reorganization or other similar laws affecting the enforcement of
            creditors' rights generally and by general equity principles
            (regardless of whether such enforcement is considered in a
            proceeding in equity or at law); all parties to the Mortgage Note
            and the Mortgage had legal capacity to execute the Mortgage Note and
            the Mortgage; and each Mortgage Note and Mortgage have been duly and
            properly executed by the Mortgagor;

                  9) that each Mortgage is a valid and enforceable perfected
            first lien on the property securing the related Mortgage Note, and
            that each Mortgage Loan is covered by an ALTA mortgagee title
            insurance policy or other form of policy or insurance acceptable to
            FNMA or FHLMC, issued by, and is a valid and binding obligation of,
            a title insurer acceptable to FNMA or FHLMC insuring the originator,
            its successor and assigns, as to the lien of the Mortgage in the
            original principal amount of the Mortgage Loan subject only to (a)
            the lien of current real property taxes and assessments not yet due
            and payable, (b) covenants, conditions and restrictions, rights of
            way, easements and other matters of public record as of the date of
            recording of such Mortgage acceptable to mortgage lending
            institutions in the area in which the Mortgaged Property is located
            or specifically referred to in the appraisal performed in connection
            with the origination of the related Mortgage Loan and (c) such other
            matters to which like properties are commonly subject which do not
            individually, or in the aggregate, materially interfere with the
            benefits of the security intended to be provided by the Mortgage;

                  10) neither the Seller nor any prior holder of any Mortgage or
            Mortgage Note has, except as the Mortgage File may reflect,
            impaired, waived, altered or modified the Mortgage or Mortgage Note
            in any respect, except by a written instrument which has been
            recorded, if necessary to protect the interests of the Purchaser and
            which has been delivered to the Purchaser. The substance of any such
            waiver, alteration or modification has been approved by the
            issuer of any primary mortgage insurance policy covering the
            Mortgage Loan and title insurer, to the extent required by the
            policies, and its terms are reflected in the Mortgage Loan
            Schedule. No Mortgage has been satisfied, cancelled or
            subordinated in whole or in part; No Mortgaged Property has been
            released in whole or in part from the lien of the Mortgage; No
            instrument of release, cancellation, modification or satisfaction
            has been executed with respect to the Mortgage Loan;

                  11) that each Mortgaged Property consists of a fee simple
            estate or condominium form of ownership in real property;


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                  12) the condominium projects that include the condominiums
            that are the subject of any condominium loan are acceptable to FNMA
            or FHLMC;

                  13) no foreclosure action is threatened or has been commenced
            with respect to the Mortgage Loan; and except for payment
            delinquencies not in excess of 30 days, there is no default, breach,
            violation or event of acceleration existing under the Mortgage or
            the related Mortgage Note and, to the best of the Seller's
            knowledge, no event which, with the passage of time or with notice
            and the expiration of any grace or cure period, would constitute a
            default, breach, violation or event of acceleration; and the Seller
            has not waived any default, breach, violation or event of
            acceleration;

                  14) that each Mortgage Loan was originated on FNMA or FHLMC
            uniform instruments for the state in which the Mortgaged Property is
            located;

                  15) that based upon a representation by each Mortgagor at the
            time of origination or assumption of the applicable Mortgage Loan,
            approximately 93.95% of the Mortgage Loans measured by principal
            balance were to be secured by owner-occupied residences and
            approximately 6.05% of the Mortgage Loans measured by principal
            balance were secured by owner-occupied second home residences;

                  16) that an appraisal of each Mortgaged Property was conducted
            at the time of origination of the related Mortgage Loan, and that
            each such appraisal was conducted in accordance with FNMA or FHLMC
            criteria, on FNMA or FHLMC forms and comparables on at least three
            properties were obtained;

                  17) that no Mortgage Loan had a Loan-to-Value Ratio at
            origination in excess of 95.00%;

                  18) the Mortgage Loans were not selected in a manner to
            adversely affect the interests of the Purchaser and the Seller knows
            of no conditions which reasonably would cause it to expect any
            Mortgage Loan to become delinquent or otherwise lose value;

                  19) each Mortgage Loan was either (A) originated directly by
            or closed in the name of either: (i) a savings and loan association,
            savings bank, commercial bank, credit union, insurance company, or
            similar institution which is supervised and examined by a federal or
            state authority or (ii) a mortgagee approved by the Secretary of
            Housing and Urban Development pursuant to Sections 203 and 211 of
            the National Housing Act or (B) originated or underwritten by an
            entity employing underwriting standards consistent with the
            underwriting standards of an institution as described in subclause
            (A)(i) or (A)(ii) above;



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                  20) each Mortgage Loan is a "qualified mortgage" within the
            meaning of Section 860G of the Internal Revenue Code of 1986,
            without regard to ss. 1.860 G-2(f) of the REMIC provisions or any
            similar rule;

                  21) that no Mortgage Loan permits negative amortization or the
            deferral of accrued interest;

                  22) pursuant to the terms of the applicable Mortgage, all
            buildings or other improvements upon each Mortgaged Property are
            insured by an insurer acceptable to FNMA or FHLMC against loss by
            fire, hazards of extended coverage and such other hazards as are
            customary in the area where the Mortgaged Property is located
            pursuant to insurance policies conforming to the requirements of
            FNMA or FHLMC. If upon origination of any Mortgage Loan, the
            Mortgaged Property was in an area identified in the Federal Register
            by the Federal Emergency Management Agency as having special flood
            hazards (and such flood insurance has been made available) a flood
            insurance policy meeting the requirements of the current guidelines
            of the Federal Insurance Administration is in effect which policy
            conforms to the requirements of FNMA or FHLMC. All individual
            insurance policies contain a standard mortgagee clause naming the
            Seller and its successors and assigns as mortgagee, and all premiums
            thereon have been paid. Each Mortgage obligates the Mortgagor
            thereunder to maintain the hazard insurance policy at the
            Mortgagor's cost and expense, and on the Mortgagor's failure to do
            so, authorizes the holder of the Mortgage to obtain and maintain
            such insurance at such Mortgagor's cost and expense, and to seek
            reimbursement therefor from the Mortgagor. Where required by state
            law or regulation, the Mortgagors have been given an opportunity to
            choose the carrier of the required hazard insurance policy, provided
            the policy is not a "master" or "blanket" hazard insurance policy
            covering the common facilities of a planned unit development. The
            hazard insurance policy is the valid and binding obligation of the
            insurer, is in full force and effect, and will be in full force and
            effect and inure to the benefit of the Purchaser upon the
            consummation of the transactions contemplated by this Agreement.
            Seller has not engaged in, and has no knowledge of the Mortgagor's
            or any subservicer s having engaged in, any act or omission which
            would impair the coverage of any such policy, the benefits of the
            endorsement provided for herein, or the validity and binding effect
            of either, including, without limitation, no unlawful fee,
            commission, kickback or other unlawful compensation or value of any
            kind has been or will be received, retained or realized by any
            attorney, firm or other person or entity, and no such unlawful
            items have been received, retained or realized by the Seller. All
            flood insurance and hazard insurance premiums have been paid when
            due;

                  23) each Mortgage Loan has been closed and the proceeds of the
            Mortgage Loan have been fully disbursed and there is no requirement
            for future advances thereunder, and any and all requirements as to
            completion of any on-site or off -site improvement included in the
            appraised value thereof, and as to disbursements of any escrow funds
            therefor have been complied with. All costs, fees and expenses
            incurred in making or closing each Mortgage Loan and the recording

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<PAGE>


            of the related Mortgage were paid, and the applicable Mortgagor is
            not entitled to any refund of any amounts paid or due under the
            Mortgage Note or Mortgage;

                  24) with respect to each Mortgage Loan with a Loan-to-Value
            Ratio greater than 80%, the excess of the principal balance of such
            Mortgage Loan to the percentage of the appraised value thereof
            specified by FNMA is and will be insured as to payment defaults by a
            primary mortgage insurance policy issued by an insurer, and in a
            form, acceptable to FNMA or FHLMC. All provisions of such primary
            mortgage insurance policy have been and are being complied with,
            such policy is in full force and effect, and all premiums due
            thereunder have been paid. No action, inaction or event has occurred
            and no state of facts exists that has, or will result in the
            exclusion from, denial of, or defense to coverage. Any Mortgage Loan
            subject to a primary mortgage insurance policy obligates the
            Mortgagor thereunder to maintain the primary mortgage insurance
            policy and to pay all premiums and charges in connection therewith.
            The mortgage interest rate for the Mortgage Loan as set forth on the
            Mortgage Loan Schedule is net of any such insurance premium;

                  25) to the best of the Seller's knowledge each Mortgaged
            Property is free from any and all toxic or hazardous substances and
            there exists no violation of any local, state or federal
            environmental law, rule or regulation;

                  26) all inspections, licenses and certificates required to be
            made or issued with respect to all occupied portions of each
            Mortgaged Property and, with respect to the use and occupancy of the
            same, including, but not limited to, certificates of occupancy and
            fire underwriting certificates, have been made or obtained from the
            appropriate authorities;

                  27) each Mortgage Loan has been properly serviced in
            accordance with all applicable federal, state and local laws, the
            terms of the Mortgage, Mortgage Note and related Mortgage Loan
            documents and all applicable guidelines to any prior mortgagee. With
            respect to escrow deposits and escrow payments, all such payments
            are in the possession of the Seller and there exist no deficiencies
            in connection therewith for which customary arrangements for
            repayment thereof have not been made. All escrow payments have been
            collected in full compliance with state and federal law. An escrow
            of funds is not prohibited by applicable law and has been
            established in accordance with law, and by Servicer's best
            estimate in an amount sufficient to pay for every item which
            remains unpaid and which has been assessed but is not yet due and
            payable. No escrow deposits or escrow payments or other charges
            or payments due the Seller have been capitalized under any
            Mortgage or any Mortgage Note. Any interest required to be paid
            pursuant to state and local law has been properly paid and
            credited;

                  28) as of the Closing Date, each Mortgage Loan will have a
            transferable life-of-loan tax service contract with First American
            Real Estate Tax Service or another tax service, provided that such
            tax service is acceptable to the Purchaser;


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                  29) each Mortgage Note and Assignment of Mortgage has been, or
            will be, delivered to the Purchaser or its custodian for each
            Mortgage Loan;

                  30) the Mortgage Loan was underwritten in accordance with the
            Seller's underwriting standards in effect at the time the Mortgage
            Loan was originated;

                  31) no fraud occurred on the part of the Seller, the Mortgagor
            or, to the best of the Seller's knowledge, any third party in
            connection with the origination of the Mortgage Loan;

                  32) each Mortgage Loan that has a Loan-to-Value Ratio at
            origination in excess of 80% is covered by a primary mortgage
            insurance policy;

                  33) no Loan is a "high-cost home loan" as defined in the
            Georgia Fair Lending Act, as amended, or in the New York Predatory
            Lending Law, codified as N.Y. Banking Law Section 6-l, N.Y. Gen.
            Bus. Law Section 771-a, and N.Y. Real Prop. Acts Law Section 1302,
            the Arkansas Home Loan Protection Act, as amended, the Kentucky
            Revised Statutes Section 360.100, as amended, or the Florida Home
            Loan Protection Act ss.494.007 (the "Florida Act"); no Loan is a
            "covered loan" as defined in the District of Columbia Home Loan
            Protection Act ss.26-1151.01 (the "D.C. Act"); no Loan is a
            "high-rate, high-fee mortgage" as defined in Maine Consumer Credit
            Code -- Truth In Lending ss.8-103 (the "Maine Act"); and no Loan is
            a "home loan" as defined in Nevada Revised Statutes title 52, as
            amended by Assembly Bill No. 284, 72nd Session (Nevada 2003) (the
            "Nevada Act"); and

                  34) none of the Mortgage Loans are subject to the Home
            Ownership and Equity Protection Act of 1994 or any comparable state
            law.

      It is understood and agreed that the representations and warranties set
forth in this Section 8 shall survive the sale of the Mortgage Loans to the
Purchaser and shall inure to the benefit of the Purchaser, notwithstanding any
restrictive or qualified endorsement on any Mortgage Note (or lost note
affidavit and indemnity) or Assignment of Mortgage or the examination of any
Mortgage File.

      Upon discovery by either the Seller, the Purchaser or its designees of a
breach of any of the foregoing representations or warranties of the Seller which
materially and adversely affects (1) the value of any of the Mortgage Loans
actually delivered or (2) the interests of the Purchaser therein, the party
discovering such breach shall give prompt written notice to the other. Within 90
(ninety) days of its discovery or its receipt of notice of any such breach of a
representation or warranty, the Seller shall, with respect to the Mortgage
Loan(s) to which such breach relates, either (i) cure such breach in all
material respects (except for a breach of that portion of the representation and
warranty relating to any casualty from the presence of hazardous waste or
hazardous substances), (ii) repurchase such Mortgage Loan or Mortgage Loans (or
any property acquired in respect thereof) from the Purchaser at the Purchase
Price, as adjusted for the then current principal balance or (iii) within the 90
(ninety)-day period following the Closing Date substitute another mortgage loan
for such Mortgage Loan. Such substitute mortgage loan shall on the date of
substitution, (a) have a principal balance not in excess of the principal
balance of the defective Mortgage Loan, (b) be accruing interest at a rate of
interest at least equal to that of the defective Mortgage Loan, (c) have

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<PAGE>
a remaining term to stated maturity not greater than, and not more than two
years less than, that of the Mortgage Loan so substituted, (d) have an original
loan-to-value ratio not higher than that of the Mortgage Loan so substituted and
a current loan-to-value ratio not higher than that of the Mortgage Loan so
substituted, and (e) comply with all the representations and warranties relating
to Mortgage Loans set forth herein, as of the date of substitution (such
mortgage loan being referred to herein as a "Qualifying Substitute Mortgage
Loan"). If the breach of representation and warranty that gave rise to the
obligation to repurchase or substitute a Loan pursuant to this Section 8 was the
representation set forth in clause (viii)(6) of this Section 8, then the Seller
shall pay to the Trust Fund, concurrently with and in addition to the remedies
provided in the preceding sentence, an amount equal to any liability, penalty or
reasonable expense that was actually incurred and paid out of or on behalf of
the Trust Fund, and that directly resulted from such breach, or if incurred and
paid by the Trust Fund thereafter, concurrently with such payment. Except as set
forth in Section 12 hereof, it is understood and agreed that the obligations of
the Seller set forth in this Section 8 to cure, substitute for or repurchase a
defective Mortgage Loan constitute the sole remedies of the Purchaser respecting
a breach of the foregoing representations and warranties.

      The Purchaser, upon receipt by it of the full amount of the Purchase Price
as adjusted for the then current principal balance for a Mortgage Loan that is
repurchased, or upon receipt of the Mortgage File for a Qualifying Substitute
Mortgage Loan for a Mortgage Loan that is substituted or repurchased, shall
release or cause to be released and reassign to the Seller the related Mortgage
File for the Mortgage Loan that is substituted and shall execute and deliver
such instruments of transfer or assignment, in each case without recourse,
representation, or warranty, as shall be necessary to vest in the Seller or its
designee or assignee title to any such substituted Mortgage Loan released
pursuant hereto, free and clear of all security interests, liens and other
encumbrances created by this Agreement, which instruments shall be prepared by
the Seller at its expense and shall be reasonably acceptable to the Purchaser,
and the Purchaser shall have no further responsibility with respect to the
Mortgage File relating to such Mortgage Loan that is substituted.

      Any cause of action against the Seller or relating to or arising out of
the breach of any representations and warranties made in this Section 8 shall
accrue as to any Mortgage Loan upon (i) discovery of such breach by the
Purchaser or notice thereof by the Seller to the Purchaser, (ii) failure by the
Seller to cure such breach, repurchase such Mortgage Loan or substitute a
Qualifying Substitute Mortgage Loan as specified above, and (iii) demand upon
the Seller by the Purchaser for all amounts payable in respect of such Mortgage
Loan.

SECTION 9. Representations, Warranties and Agreements of Purchaser.

      (a) The Purchaser hereby represents and warrants to the Seller, as of the
date hereof (or such other date as is specified in the related representation or
warranty) as follows:

            (i) The Purchaser is a corporation duly formed, validly existing and
      in good standing under the laws of the State of Delaware;

            (ii) The execution and delivery of this Agreement by the Purchaser
      and its performance of and compliance with the terms of this Agreement
      will not violate the Purchaser's corporate charter or by-laws or will not
      conflict with or result in a breach of any

                                       11
<PAGE>

      of the terms or provisions of, or constitute a default under, any
      indenture, mortgage, deed of trust, loan agreement or other material
      agreement or instrument to which the Purchaser is a party or by which
      the Purchaser or to which any property or assets of the Purchaser is
      subject;

            (iii) The Purchaser has all requisite corporate power, authority and
      capacity to enter into this Agreement and to perform the obligations
      required of it hereunder. This Agreement, assuming due authorization,
      execution and delivery by the Seller, constitutes a valid and legally
      binding obligation of the Purchaser, enforceable against the Purchaser in
      accordance with its terms, subject, as to enforcement, to bankruptcy,
      insolvency, reorganization and other similar laws of general applicability
      relating to or affecting creditors' rights and to general equity
      principles, regardless of whether such enforcement is considered in a
      proceeding in equity or at law. No consent, approval, authorization or
      order of or registration with, or notice to, any governmental authority or
      court is required, under state or federal law prior to the execution,
      delivery, performance of or compliance by the Purchaser with this
      Agreement or the consummation by the Purchaser with any other transaction
      contemplated hereby;

            (iv) The Purchaser is not in default with respect to any order or
      decree of any court or any order, regulation or demand of any federal,
      state, municipal or governmental agency, which the Purchaser default might
      have consequences that would materially and adversely affect the condition
      (financial or other) or operations of the Purchaser or its properties or
      might have consequences that would affect its performance hereunder; and

            (v) No litigation is pending or, to the best of the Purchaser's
      knowledge, threatened against the Purchaser which would prohibit its
      entering into this Agreement or performing its obligations under this
      Agreement.

SECTION 10. Purchaser's Conditions to Closing.

      The obligations of the Purchaser under this Agreement shall be subject to
the satisfaction, on or prior to the Closing Date, of the following conditions:

      (a) The obligations of the Seller required to be performed by it on or
prior to the Closing Date pursuant to the terms of this Agreement shall have
been duly performed and complied with and all of the representations and
warranties of the Seller under this Agreement shall be true and correct as of
the date hereof and as of the Closing Date, and no event shall have occurred
which, with notice or the passage of time, or both, would constitute a default
under this Agreement, and the Purchaser shall have received a certificate to
that effect signed by an Authorized Officer (as defined below) of the Seller.

      (b) The Purchaser or the Purchaser's document custodian shall have
received, or the Purchaser's attorney shall have received in escrow, all of the
following closing documents, in such forms as are agreed upon and acceptable to
the Purchaser, duly executed by all signatories other than the Purchaser, as
required pursuant to the respective terms thereof:

                                       12
<PAGE>


            (i) Each original Mortgage Note (or lost note affidavit and
      indemnity), duly endorsed originally or by facsimile, without recourse, to
      the Purchaser, in each case in accordance with the instructions set forth
      in Exhibit A attached hereto, which Mortgage Note (or lost note affidavit
      and indemnity) shall be delivered to and held by the Purchaser or its
      agent on behalf of the Purchaser;

            (ii) The Mortgage Loan Schedule prepared by Seller dated as of the
      related Closing Date and attached hereto;

            (iii) A certificate signed by an officer, which officer may be
      either a senior vice president, a vice president, an assistant vice
      president or assistant secretary (an "Authorized Officer"), dated as of
      the Closing Date, substantially in the form attached hereto as Exhibit C,
      to the parties hereto, and attached thereto copies of the charter and
      by-laws and a Good Standing Certificate or a memorandum setting forth the
      verbal assurances from the appropriate regulatory authorities with respect
      to the Seller will be immediately forthcoming; and

            (iv) An opinion of Seller's counsel in substantially the form
      attached hereto as Exhibit D.

      (c) The Seller will furnish to the Purchaser such other certificates of
its officers or others and such other documents to evidence fulfillment of the
conditions set forth in this Agreement as the Purchaser and its attorney may
reasonably request.

SECTION 11. Seller's Conditions to Closing.

      The obligations of the Seller under this Agreement shall be subject to the
satisfaction, on or prior to the Closing Date, of the following conditions:

      (a) The obligations of the Purchaser required to be performed by it on or
prior to the Closing Date pursuant to the terms of this Agreement shall have
been duly performed and complied with and all of the representations and
warranties of the Purchaser under this Agreement shall be true and correct as of
the date hereof and as of the Closing Date, and no event shall have occurred
which, with notice or the passage of time, or both, would constitute a default
under this Agreement, and the Seller shall have received a certificate to that
effect signed by an Authorized Officer of the Purchaser.

SECTION 12. Interim Servicing.

      During the period (the "Interim Servicing Period") commencing on the
Closing Date and ending on November 1, 2003, or such other date as the Seller
and the Servicer shall agree upon (the "Transfer Date"), the Seller shall
service the Mortgage Loans on behalf of the Purchaser in accordance with the
Purchaser's Servicing Guide in effect on the Closing Date. As compensation for
servicing the Mortgage Loans during the Interim Servicing Period, the Seller
shall be entitled to receive a fee of $7.00 per Mortgage Loan for each full
calendar month during the Interim Servicing Period. With respect to any partial
month the Seller services the Mortgage Loans on behalf of the

                                       13
<PAGE>

Purchaser, the Seller shall be entitled to receive a pro rata portion of the
monthly interim servicing fee. On or prior to the Servicing Transfer Date, the
Seller shall have made files for each Mortgage Loan, that consist at least of
the documents listed on Schedule 4 attached hereto (with respect to each
Mortgage Loan, a "Servicing File", and collectively, the "Servicing Files") and
shall deliver such Servicing File to the Purchaser.

      In connection with any Form 10-K Certification, filed pursuant to the
Pooling and Servicing Agreement during the Interim Servicing Period, the Seller
shall provide the Servicer with a back-up certification substantially in the
form attached hereto as Exhibit F.

SECTION 13. Transfer of Servicing Covenants.

      On the Transfer Date, the Seller shall transfer the servicing obligations
with respect to the Mortgage Loans to the Purchaser or its designee in
accordance with the servicing transfer procedures attached hereto as Exhibit E
(the "Transfer Procedures") and the following requirements:

      (a) Notice to Mortgagors. On or before the date prescribed under
applicable federal and state law, the Seller shall, at the Seller's expense,
mail to each Mortgagor a letter advising the Mortgagor of the transfer of the
servicing to the Purchaser or its designee, as applicable. The Seller's notice
shall comply with all state and federal requirements. If any notices are
returned to the Seller by the postal service for any reason, the Seller shall
promptly forward the notice to the Purchaser or its designee, as applicable, for
disposition.

      (b) Notice to Mortgage Insurers. The Seller shall, at the Seller's
expense, notify all relevant private mortgage insurance companies no later than
15 days prior to the Transfer Date that all insurance premium billings for the
Mortgage Loans must be sent to the Purchaser or its designee, as applicable,
following the Transfer Date.

      (c) Notice to Taxing Authorities and Hazard Insurance Companies. No later
than 15 days prior to the Transfer Date, the Seller shall, at the Seller's
expense, transmit to the applicable taxing authorities and hazard insurance
companies and/or agents, notification of the assignment of the servicing and
instructions to deliver all notices, tax bills and insurance statements, as the
case may be, to the Purchaser or its designee, as applicable, from and after the
Transfer Date. The Seller shall provide the Purchaser or its designee, as
applicable, with copies of such notices and instructions within five (5)
business days of the Seller's dispatch of such notices and instructions to the
foregoing entities.

      (d) Internal Revenue Service Forms. The Seller shall mail, on or before
the date required by law, all Internal Revenue Service required forms to all
parties entitled to receive same for the period from January 1 until the
Transfer Date. The Seller shall provide copies of such forms to the Purchaser or
its designee, as applicable, upon request. The Purchaser or its designee, as
applicable, shall make such Internal Revenue Service filings pertaining to
events on and after the Transfer Date.

      (e) Insurance Policies. After the Transfer Date, the Seller shall deliver
such insurance policies or renewals as it may receive with respect to the
mortgage loan or the servicing to Purchaser or its designee, as applicable,
within five (5) Business Days of its receipt of same.


                                       14
<PAGE>

      (f) Payment of Hazard Insurance Premiums. The Seller shall pay, prior to
the Transfer Date, all hazard insurance premiums due within 30 days after the
Transfer Date, provided that the Seller has received bills for such insurance
premiums prior to the Transfer Date. The Seller shall immediately deliver to the
Purchaser or its designee, as applicable, all bills and correspondence related
to the mortgage loan and received by it subsequent to the Transfer Date.

      (g) Property Taxes. The Seller shall cause to be paid prior to the
Transfer Date all tax bills (including interest, late charges, and penalties in
connection therewith) due within 30 days of the Transfer Date that are issued by
a taxing authority and relate to any Mortgaged Property and that are received by
the Seller or its tax service provider prior to the Transfer Date. The Seller
or, its tax service provider shall immediately forward to the Purchaser or its
designee, as applicable, all tax bills received by the Seller after such date.
The foregoing shall in no way impose upon the Seller an obligation to pay any
taxes (including interest, late charges, and penalties associated therewith) for
which a title insurer has an obligation to pay by virtue of the terms of a
mortgagee policy of title insurance which is issued in connection with the
origination of any Mortgage Loan and which insures the Purchaser subsequent to
the purchase.

      (h) Social Security Numbers. Each Mortgage Loan has a certified Social
Security number as required by the Internal Revenue Service or, if the Mortgage
Loan does not have a certified Social Security number, the Seller has exercised
due diligence (as defined by Internal Revenue Service regulations) to obtain
such a number.

      (i) Internal Revenue Service Forms. All Internal Revenue Service forms,
including, but not limited to, forms 1099, 1099A and 1098, as appropriate, which
are required to be filed with respect to each Mortgage Loan for activity
occurring on or before year end of the preceding calendar year have been filed.

      (j) Escrow Analysis. With respect to each Mortgage Loan that was
originated more than twelve (l2) months prior to the Transfer Date, the Seller
has properly conducted such escrow analyses with respect to the Mortgage Loan as
required under applicable law. Any adjustment to the Mortgagor's escrow payment,
refunds of escrow overages and collections of escrow shortages have been made in
accordance with all applicable law.

      (k) Mortgage Payments Received Prior to Transfer Date. Prior to the
Transfer Date, all payments received by the Seller with respect to each Mortgage
Loan shall be properly applied by the Seller to the account of the related
Mortgagor.

      (l) Mortgage Payments Received on or After Transfer Date. Any payment with
respect to a mortgage loan received by the Seller on or after the Transfer Date
shall not be processed by the Seller but shall instead be forwarded to the
Purchaser or its designee, as applicable, at the Seller's expense. The Seller
shall accumulate such payments and forward them to the Purchaser every second
business day via overnight mail. After the first day of the third month
following the month in which the Transfer Date occurs, any payment received by
the Seller with respect to a Mortgage Loan shall be forwarded by the Seller to
the Purchaser or its designee by regular mail within five (5) business days of
the Seller's receipt thereof.


                                       15
<PAGE>

      (m) Recording of Assignments. With respect to each Mortgage Loan, the
Seller shall promptly record an Assignment of Mortgage in accordance with the
Purchaser's specifications which complies with all applicable provisions of
state law in the applicable county recorder's office.

      (n) Delivery of Servicing File. With respect to each Mortgage Loan, the
Seller shall deliver, at the time specified in the Transfer Procedures, all
documents reasonably necessary to service the Mortgage Loans.

      (o) Transfer of Escrows. Escrow funds relating to the Mortgage Loans shall
be transferred at the time, and in accordance with the requirements, set forth
in the Transfer Procedures.

SECTION 14. Covenant Not to Solicit.

      The Seller covenants that neither the Seller nor any affiliate of the
Seller will take any action personally, by telephone, by mail or otherwise, to
solicit the prepayment of the Mortgage Loans by the Mortgagors, in whole or in
part. Nothing in this Section 14, however, shall prohibit the Seller or any
affiliate from:

            (i) advertising its availability for handling refinancings of
      mortgage loans in its portfolio if the Mortgage Loans are not specifically
      targeted;

            (ii) promoting terms available for refinancing by sending letters or
      promotional material to the mortgagors of all the mortgage loans that it
      owns or services;

            (iii) promoting terms available for refinancing by sending letters
      or promotional material to the mortgagors of all the mortgage loans of a
      specific type (e.g., conventional fixed-rate or conventional
      adjustable-rate) that it owns or services;

            (iv) promoting terms available for refinancing by sending letters or
      promotional material to the mortgagors of all the mortgage loans that fall
      within specific interest rate ranges that it owns or services;

            (v) promoting terms available for refinancing by communicating with
      mortgagors of mortgage loans in its portfolio that one or more predictive
      models indicate a propensity to prepay;

            (vi) providing payoff information or otherwise cooperating with
      individual Mortgagors who contact it about prepaying any Mortgage Loan; or

            (vii) advising individual Mortgagors who contact it about prepaying
      any Mortgage Loan of refinancing terms or streamlined origination
      arrangements that are available.

      In no event, however, shall the Seller or any affiliate treat mortgage
loans that it holds in its own portfolio and the Mortgage Loans as separate
classes of mortgages for purposes of advertising the availability of refinancing
terms.


                                       16
<PAGE>

SECTION 15. Notices.

      All demands, notices and communications hereunder shall be in writing and
shall be deemed to have been duly given if mailed, by registered or certified
mail, return receipt requested, or, if by other means, when received by the
other party. Notices to the Seller shall be directed to Inter First, 777 East
Eisenhower Parkway, Ann Arbor, Michigan 48108, Attention: Steve Kapp-Senior Vice
President with a copy to ABN AMRO Mortgage Group, Inc., 2600 West Big Beaver
Road, Troy, Michigan 48084, Attention: Thomas E. Reiss; and notices to the
Purchaser shall be directed to Washington Mutual Mortgage Securities Corp., 1201
Third Avenue, Seattle, WA 98101, Attention: Legal Services Department; or such
other addresses as may hereafter be furnished to the other party by like notice.

SECTION 16. Termination.

      This Agreement may be terminated (a) by the mutual consent of the parties
hereto, or (b) by the Purchaser if the conditions to the Purchaser's obligations
to closing set forth under Section 10 hereof are not fulfilled as and when
required to be fulfilled or (c) by the Seller if the Purchaser's obligations
under Section 11 hereof are not fulfilled as and when required. In the event of
a termination pursuant to Section 16(b), the Seller agrees that it will pay the
out-of-pocket fees and expenses of the Purchaser in connection with the
transactions contemplated by this Agreement and in the event of a termination
pursuant to Section 16(c), the Purchaser agrees that it will pay the out-
of-pocket fees and expenses of the Seller in connection with the transactions
contemplated by this Agreement.

SECTION 17. Representations, Warranties and Agreements to Survive Delivery.

      All representations, warranties and agreements contained in this
Agreement, or in certificates of officers of the Seller and the Purchaser
submitted pursuant hereto, shall remain operative and in full force and effect
and shall survive transfer and sale of the Mortgage Loans to the Purchaser.

SECTION 18. Severability.

      If any provision of this Agreement shall be prohibited or invalid under
applicable law, the Agreement shall be ineffective only to such extent, without
invalidating the remainder of this Agreement.

SECTION 19. Counterparts.

      This Agreement may be executed in any number of counterparts, each of
which shall be an original, but both of which together shall constitute one and
the same agreement.


                                       17
<PAGE>


SECTION 20. Governing Law.

      This Agreement shall be deemed to have been made in the State of New York
and shall be interpreted in accordance with the laws of such state without
regard to the principles of conflicts of law of such state.

SECTION 21. Further Assurances.

      The Seller and the Purchaser agree to execute and deliver such instruments
and take such actions as the other party may, from time to time, reasonably
request in order to effectuate the purpose and to carry out the terms of this
Agreement.

SECTION 22. Successors and Assigns.

      This Agreement shall be binding upon and inure to the benefit of and be
enforceable by the Seller and the Purchaser and their permitted successors and
assigns. The Seller acknowledges and agrees that the Purchaser may assign its
rights under this Agreement. Any person into which the Seller may be merged or
consolidated (or any person resulting from any merger or consolidation involving
the Seller), or any person succeeding to the business of the Seller shall be
considered the "successor" of the Seller hereunder. Except as provided in the
two preceding sentences, this Agreement cannot be assigned, pledged or
hypothecated by any party hereto without the written consent of the other party
to this Agreement. Notwithstanding anything to the contrary in this Section 22,
the parties hereto agree that the Purchaser has the right to assign its rights
and interest in, to and under Section 8 hereof.

SECTION 23. Amendments.

      No tern or provision of this Agreement may be waived or modified unless
such waiver or modification is in writing and signed by a duly authorized
officer of the party against whom such waiver or modification is sought to be
enforced.

SECTION 24. Manual Revisions to Agreement.

      It is the intent of the parties that no erasure, interlineation or
addition to the form of this Agreement shall be deemed to form any part of the
agreement between the parties.

SECTION 25. Electronic Signatures.

      The parties agree that signatures exchanged by telephone transmission of
facsimile shall be deemed to be "electronic signatures" and this agreement shall
be deemed to be an "electronic record" for purposes of 5 ILCS 175/10-105.


                                       18
<PAGE>



      IN WITNESS WHEREOF, the Seller and the Purchaser have caused their names
to be signed hereto by their respective duly authorized officers as of the date
first above written.

ABN AMRO Mortgage Group, Inc.,
as Seller

By: /s/ Joseph Krul
    -------------------------------
Name:   Joseph Krul
Title:  Executive Vice President


Washington Mutual Mortgage Securities Corp.,
as Purchaser

By: /s/ Thomas G. Lehmann
    -------------------------------
Name:   Thomas G. Lehmann
Title:  First Vice President

<PAGE>

                                   SCHEDULE 1

                             MORTGAGE LOAN SCHEDULE

<PAGE>

                                   SCHEDULE 2

                       MORTGAGE LOAN SCHEDULE INFORMATION

      Each Mortgage Loan shall be identified by at least the following details,
among others, relating to each Mortgage Loan:

      the loan number of the Mortgage Loan;

      the city, state and zip code of the Mortgaged Property;

      the mortgage interest rate as of the Cut-Off Date;

      the original term and maturity date of the related Mortgage Note;

      the original principal balance;

      the first payment date;

      the monthly payment in effect as of the Cut-Off Date;

      the date of the last paid installment of interest;

      the unpaid principal balance as of the close of business on the Cut-Off
Date;

      the loan-to-value ratio at origination;

      the type of property and the Original Value of the Mortgaged Property;

      whether a primary mortgage insurance policy is in effect as of the Cut-Off
Date;

      the nature of occupancy at origination;

      the county in which the Mortgaged Property is located, if available; and

      the Closing Date.

      "Original Value" shall be defined in the Pooling and Servicing Agreement,
      dated as of December 1, 2003, among U.S. Bank National Association, as
      Trustee (the, "Trustee", Washington Mutual Mortgage Securities Corp. as
      Seller and Servicer (in such capacity, the "Seller" or the "Servicer" and
      ABN AMRO Mortgage Corporation as Depositor (the "Depositor").

<PAGE>

                                   SCHEDULE 3

                            CONTENTS OF MORTGAGE FILE

            (i) The original Mortgage Note (or, if the original Mortgage Note
      has been lost or destroyed, a lost note affidavit and indemnity) bearing
      all intervening endorsements endorsed, "Pay to the order of
      _________________, without recourse" and signed in the name of the Seller
      by an Authorized Officer showing an unbroken chain of title from the
      originator thereof to the person endorsing;

            (ii) The original Mortgage with evidence of recording thereon, and
      if the Mortgage was executed pursuant to a power of attorney, a certified
      true copy of the power of attorney certified by the recorder's office,
      with evidence of recording thereon, or certified by a title insurance
      company or escrow company to be a true copy thereof; provided, that if
      such original Mortgage or power of attorney cannot be delivered with
      evidence of recording thereon on or prior to the Closing Date because of a
      delay caused by the public recording office where such original Mortgage
      has been delivered for recordation or because such original Mortgage has
      been lost, the Seller shall deliver or cause to be delivered to the
      Purchaser a true and correct copy of such Mortgage, together with (1) in
      the case of a delay caused by the public recording office, an Officer's
      Certificate signed by a Responsible Officer of the Seller stating that
      such original Mortgage has been dispatched to the appropriate public
      recording official for recordation or (2) in the case of an original
      Mortgage that has been lost, a certificate by the appropriate county
      recording office where such Mortgage is recorded or from a title insurance
      company or escrow company indicating that such original was lost and the
      copy of the original mortgage is a true and correct copy;

            (iii) The original Assignment to "____________," which assignment
      shall be in form and substance acceptable for recording, or a copy
      certified by the Seller as a true and correct copy of the original
      Assignment which has been sent for recordation. Subject to the foregoing,
      such assignments may, if permitted by law, be by blanket assignments for
      Mortgage Loans covering Mortgaged Properties situated within the same
      county. If the Assignment is in blanket form, a copy of the Assignment
      shall be included in the related individual Mortgage File;

            (iv) The originals of any and all instruments that modify the terms
      and conditions of the Mortgage Note, including but not limited to
      modification, consolidation, extension and assumption agreements including
      any adjustable rate mortgage (ARM) rider, if any;

            (v) The originals of all required intervening assignments, if any,
      with evidence of recording thereon, and if such assignment was executed
      pursuant to a power of attorney, a certified true copy of the power of
      attorney certified by the recorder's office, with evidence of recording
      thereon, or certified by a title insurance company or escrow company to be
      a true copy thereof; provided, that if such original assignment or power
      of attorney cannot be delivered with evidence of recording thereon on or
      prior to the Closing Date because of a delay caused by the public

<PAGE>

      recording office where such original assignment has been delivered for
      recordation or because such original Assignment has been lost, the Seller
      shall deliver or cause to be delivered to the Purchaser a true and correct
      copy of such Assignment, together with (a) in the case of a delay caused
      by the public recording office, an Officer's Certificate signed by a
      Responsible Officer of the Seller stating that such original assignment
      has been dispatched to the appropriate public recording official for
      recordation or (b) in the case of an original assignment that has been
      lost, a certificate by the appropriate county recording office where such
      assignment is recorded or from a title insurance company or escrow company
      indicating that such original was lost and the copy of the original
      assignment is a true and correct copy; and

            (vi) Any and all other documents, opinions and certificates executed
      and/or delivered by the related Mortgagor and/or its counsel in connection
      with the origination of such Mortgage Loan, which may include
      truth-in-lending statements and other legal statements, an appraisal and a
      survey.

<PAGE>

                                    EXHIBIT A
                               INSTRUCTION LETTER

                   Washington Mutual Mortgage Securities Corp.
                               75 N. Fairway Drive
                          Vernon Hills, Illinois 60061

_______________, 2003

ABN AMRO Mortgage Group, Inc.
2600 West Big Beaver Road
Troy, Michigan 48084

Dear Ladies and Gentlemen:

      Pursuant to the Whole Loan Purchase Agreement dated as of December 1, 2003
(the "Purchase Agreement") between you and us, we have agreed to purchase from
you certain Mortgage Loans. All capitalized terms used herein and not otherwise
defined shall have the meanings set forth in the Purchase Agreement.

      In order to facilitate these transactions, and for the purpose of
convenience only, we hereby authorize and direct you to:

<TABLE>
<CAPTION>
Action                                                                            Due Date

<S>                                                                               <C>
1.         Endorse mortgage notes (or lost note affidavits
           and indemnities) to:
           "Pay to the order of
           _____________________
           without recourse"                                                      one week prior to funding

2.         Assign mortgages to be recorded to U.S. Bank
           National Association on or before the fifth
           Business Day after the Closing Date                                    one week prior to funding

3.         Deliver to the Purchaser or its agent all Mortgage
           Loan documents pertaining to each loan                                 two business days after funding

4.         Provide lost mortgage note affidavits, certified
           copies of all missing mortgages, and certified
           recorded copies of missing intervening
           assignments                                                            one week prior to funding

5.         Mortgage Loan Schedule generated by Purchaser
           and agreed to by Seller                                                one day prior to funding
</TABLE>

<PAGE>

                                                Sincerely,

                                                WASHINGTON MUTUAL MORTGAGE
                                                SECURITIES CORP.


                                                By:_____________________________
                                                Name:
                                                Title:

<PAGE>

                                    EXHIBIT B

                               FORM OF ASSIGNMENT

      ABN AMRO Mortgage Group, Inc., a Delaware corporation (the "Seller"), in
exchange for $[ ] in hand paid and other good and valuable consideration, hereby
grants, bargains, sells, assigns, transfers, conveys, and sets over to
Washington Mutual Mortgage Securities Corp., a Delaware corporation (the
"Purchaser"), all of the Seller's right, title, and interest in, to, and under
the mortgage loans listed on Schedule 1 attached hereto, the mortgage notes
evidencing or relating to such mortgage loans, all mortgages, trust deeds, title
insurance policies, property insurance policies, chattel paper, loan guaranties,
loan accounts, surveys, instruments, certificates, and other documents
whatsoever evidencing or relating to such mortgage notes and mortgage loans, and
all books, ledgers, books of account, records, writings, data bases,
information, and computer software (and all documentation therefor or relating
thereto, and all licenses relating to or covering such computer software and/or
documentation), and all other property, rights, title, and interests whatsoever
relating to, used or useful in connection with, or evidencing, embodying,
incorporating, or referring to, any of the foregoing (the "Mortgages"). The
Seller warrants to the Purchaser that the Seller is the owner of the Mortgages,
subject to no liens, claims, or encumbrances.

<PAGE>

Dated: _______ __, 2003                   ABN AMRO Mortgage Group, Inc.


                                          By:___________________________________
                                          Name:
                                          Title:

<PAGE>

ACKNOWLEDGED ON _________ __, 2003

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.


By:____________________________________-

Name:
Title:

<PAGE>

STATE OF MICHIGAN     )
                      )
COUNTY OF OAKLAND     )

      I, __________________, a Notary Public in and for the said County and
State, do hereby certify that _____________, personally known to me to be the
same person whose name is subscribed to the foregoing instrument as
________________ of ABN AMRO Mortgage Group, Inc., appeared before me this day
in person and, being first sworn, acknowledged that he signed and delivered the
said instrument as his own free and voluntary act, and as the free and voluntary
act of said corporation, as the ___________________ of ABN AMRO Mortgage Group,
Inc., for the uses and purposes therein set forth, and that he was duly
authorized to execute the said instrument by the Board of Directors of said
Delaware corporation.

      Given under my hand and seal, this __th day of __________, 2003.


                                              _________________________________
                                              Notary Public

                                              My commission expires:

<PAGE>

                                    EXHIBIT C

                          FORM OF OFFICER'S CERTIFICATE

                          ABN AMRO Mortgage Group, Inc.

      I, ____________________, do hereby certify pursuant to Section 10(a) and
(b)(iii) of the Purchase Agreement (as hereinafter defined) that I am the duly
elected _____________________ of ABN AMRO Mortgage Group, Inc. ("AAMGI" ), a
Delaware corporation, and further certify as follows:

      1. Attached hereto as Exhibit "A" is a true and correct copy of the
articles of incorporation of AAMGI. There has been no amendment or other
document filed affecting the charter as of the date of this certification of
AAMGI, and no such amendment has been authorized.

      2. Attached hereto as Exhibit "B" is a true and correct copy of the
by-laws of AAMGI as in full force and effect as of the date of this
certification.

      3. No proceedings looking toward merger, consolidation, liquidation, or
dissolution of AAMGI are pending or contemplated.

      4. Each person who, as an officer or representative of AAMGI, signed, or
will sign (a) the Purchase Agreement, and (b) any other document delivered
pursuant thereto or on the date hereof in connection with the Whole Loan
Purchase Agreement, dated as of December 1, 2003, between AAMGI, as seller, and
Washington Mutual Mortgage Corporation, as Purchaser (the "Purchase Agreement")
was, at the respective times of such signing and delivery, and is as of the date
hereof duly elected or appointed, qualified and acting as such officer or
representative, and the signatures of such persons appearing on such documents
are their genuine signatures.

      5. Attached hereto as Exhibit "D" is a Good Standing Certificate issued by
the Office of the Secretary of State of Delaware as of __________________,
_______. A current Good Standing Certificate has been requested from the Office
of the Secretary of State of ___________ and will be supplied when it is
received.

      6. AAMGI has performed all obligations and satisfied all conditions on its
part to be performed or satisfied under the Purchase Agreement on or prior to
the Closing Date and all of the representations and warranties of the Seller
under the Purchase Agreement are true and correct as of the date hereof and as
of the Closing Date, and no event has occurred which, with notice or passage of
time, or both, would constitute a default under the Purchase Agreement.

      All capitalized terms used herein and not otherwise defined shall have the
meanings set forth in the Purchase Agreement.

<PAGE>

      IN WITNESS WHEREOF, I have hereunto signed my name.

Date:________________
                                           ABN AMRO Mortgage Group, Inc.

                                           By:__________________________________
                                           Name:
                                           Title:

<PAGE>

                    [Opinion to be revised in accordance with
                    general counsel's form of opinion letter]

                                    EXHIBIT D

                      [Opinion of Seller's In-house Counsel
                         pursuant to Section 10(b)(iv)]

                                                  ________________, 2003

ABN AMRO Mortgage Corporation
181 West Madison Street, Suite 3250
Chicago, Illinois 60602

Re:   ABN AMRO Mortgage Corporation Purchase of Mortgage Loans

Ladies and Gentlemen:

As General Counsel to ABN AMRO Mortgage Group, Inc., a Delaware Corporation
("Seller'), I and attorneys working under my supervision have acted as counsel
to Seller in connection with the sale of Mortgage Loans by Seller to Washington
Mutual Mortgage Securities Corp. (the "Purchaser") pursuant to a Whole Loan
Purchase Agreement, dated as of December 1, 2003 (the "Purchase Agreement"),
between the Purchaser and Seller. This opinion is being delivered to the
Purchaser pursuant to Section 10(b)(iv) of the Purchase Agreement. All
capitalized terms not otherwise defined herein have the meanings given them in
the Purchase Agreement.

In rendering the opinions set forth below, we have examined and relied upon
originals or copies, certified or otherwise identified to our satisfaction, of
the charter and by-laws of Seller, the Purchase Agreement and such corporate
records, agreements or other instruments of Seller, and such certificates,
records and other documents, agreements and instruments, including, among other
things, certain documents delivered on the Closing Date, as we have deemed
necessary and proper as the basis for our opinions. In connection with such
examination, we have assumed the genuineness of all signatures, the authenticity
of all documents, agreements and instruments submitted to us as originals, the
conformity to original documents, agreements and instruments of all documents,
agreements and instruments submitted to us as copies or specimens, the
authenticity of the originals of such documents, agreements and instruments
submitted to us as copies or specimens, the conformity to executed original
documents of all documents submitted to us in draft and the accuracy of the
matters set forth in the documents we reviewed. We have also assumed that all
documents, agreements and instruments have been duly authorized, executed and
delivered by all parties thereto. As to any facts material to such opinions that
we did not independently establish or verify, we have relied upon statements and
representations of officers and other representatives of Seller as we have
deemed necessary

<PAGE>

and proper as the basis for our opinions, including, among other things, the
representations and warranties of Seller in the Purchase Agreement.

Based upon the foregoing, I am of the opinion that:

      1. Seller is a duly organized, validly existing and in good standing under
the laws of and either is not required to be qualified to do business under the
laws of any states where such qualification is necessary to transact the
business contemplated by the Purchase Agreement, or is qualified to do business
under the laws of any states where such qualification is necessary to transact
the business contemplated by the Purchase Agreement, and Seller is duly
authorized and has full corporate power and authority to transact the business
contemplated by the Purchase Agreement.

      2. The Purchase Agreement has been duly authorized, executed and delivered
by Seller and is a legal, valid and binding obligation of and is enforceable
against Seller in accordance with its terms, except that the enforceability
thereof may be subject to (A) bankruptcy, insolvency, receivership,
conservatorship, reorganization, moratorium or other laws, now or hereafter in
effect, relating to creditors' rights generally, (B) general principles of
equity (regardless of whether enforcement is sought in a proceeding in equity or
at law) and (C) limitations of public policy under applicable securities laws as
to rights of indemnity and contribution under the Purchase Agreement.

      3. No consent, approval, authorization or order of any court or
supervisory, regulatory, administrative or governmental agency or body is
required for the execution, delivery and performance by Seller of or compliance
by Seller with the Purchase Agreement, the sale of the Mortgage Loans or the
consummation of the transactions contemplated by the Purchase Agreement.

      4. Neither the execution and delivery by Seller of the Purchase Agreement,
nor the consummation by Seller of the transactions contemplated therein, nor the
compliance by Seller with the provisions thereof, will conflict with or result
in a breach of any of the terms, conditions or provisions of Seller's charter or
by-laws or board or shareholder's resolutions, or any agreement or instrument to
which Seller is now a patty or by which it is bound, or constitute a default or
result in an acceleration under any of the foregoing, or result in the violation
of any law, rule, regulation, order, judgment or decree to which Seller or its
property is subject, which, in any of the above cases, would materially and
adversely affect Seller's ability to perform its obligations under the Purchase
Agreement.

      5. There is not an action, suit, proceeding or investigation pending, or,
to the best of my knowledge, threatened against Seller which, either in any one
instance or in the aggregate, would draw into question the validity of the
Purchase Agreement or the Mortgage Loans or of any action taken or to be taken
in connection with the obligations of Seller contemplated therein, or which
would be likely to materially impair the ability of Seller to perform under the
terms of the Purchase Agreement.

The Opinions expressed herein are limited to matters of federal and Michigan law
and do not purport to cover any matters as to which laws of any other
jurisdiction are applicable. Except as expressly provided herein, this opinion
is being furnished to you solely for your benefit in connection with the
purchase of the

<PAGE>

Mortgage Loans, and it is not to be used, circulated, quoted or otherwise
referred to for any purpose without my express written consent.

Sincerely,

ABN AMRO Mortgage Group, Inc.


By:__________________________________

<PAGE>

      I, ___________________, [Assistant Secretary] of ABN AMRO Mortgage Group,
Inc., a Delaware corporation, hereby certify that _______________________ is the
duly elected, qualified and acting _______________________ of ABN AMRO Mortgage
Group, Inc. and that the signature appearing on the preceding page is his
genuine signature.

      IN WITNESS WHEREOF, I have hereunto signed my name.

Date:__________________
                                                ABN AMRO Mortgage Group, Inc.


                                                By:_____________________________

                                                Name:
                                                Title:

<PAGE>

                                    EXHIBIT E

                          Servicing Transfer Procedures

                      Washington Mutual Informational Sheet
                     Note: All addresses subject to revision

New Servicer Name:         Washington Mutual Bank F.A.
                           7301 Baymeadows Way
                           Jacksonville, FL  32256

Contact:                   Coordinator Name
                           Phone:
                           Fax:
                           E-Mail:

Customer Service:          1-866-WAMU-Yes (866-926-8937)
                           Monday - Friday 7:00 a.m. - 8:00 p.m.
                           Saturdays 8:00 a.m. - 1:00 p.m.

Correspondence Address:    Washington Mutual
                           (List WAMU loan number)
                           P.O. Box 3139
                           Attention: Customer Care Department
                           Milwaukee, WI  53201-3139
                           Fax # (414) 359-6971

Payments sent to:
Lock Boxes                              Tax Department
Washington Mutual                       Washington Mutual
P.O. Box 660139                         P.O. Box  100563
Dallas, Texas 75266-0139                Florence, SC 29501
                                        Attention: Tax Department

Service Bureau:           Alltel

Tax Service:              Lereta Tax Service (Lender # 26990) and
                          Trans American Real Estate Tax Service (Lender #3001)

HUD ID #:                 73815

Optional Insurance:       Contact WAMU for details

Forced Placed Ins.:       American Security Insurance Co.(Assurant)

Flood Contracts:          Lereta.

<PAGE>

Flood / Hazard Endorsements                 Payoff Checks Forwarded:

Washington Mutual Bank, F.A., .             Washington Mutual Bank, F.A.
Its Successors and/or Assigns               11200 W. Parkland Avenue
P.O. Box 25064                              Suite 908
Santa Ana, CA 92799-5064                    Milwaukee, WI  53224
Fax # 714-937-2430                          Attn: Payoff Department

Optional and PMI/MIP Insurance              Wiring Payoff Funds:

Washington Mutual Bank, F.A                 Account: 182380181590
P.O. Box 100564                             ABA: 075000022
Florence, SC 29501-0564                     Beneficiary: WAMU Payoff Accnt
                                            (Reference WAMU Loan #)

<PAGE>

                     PURCHASER'S TRANSFER DATE INSTRUCTIONS

SUBJECT                                                                     PAGE
-------                                                                     ----

A. GENERAL REQUIREMENTS .......................................................2

B. ESCROW/IOE .................................................................4

C. ACH DRAFTING/BI-SAVERS .....................................................4

D. HAZARD INSURANCE INFORMATION ...............................................5

E. LOSS DRAFTS ................................................................6

F. TAX INFORMATION ............................................................8

G. FHA/MIP/PMI INFORMATION ....................................................9

H. LIFE, A&H DISABILITY AND OTHER "OPTIONAL" INSURANCE .......................10

I. ASSUMPTIONS ...............................................................10

J. PAID-IN-FULL AND PARTIAL RELEASES .........................................12

K. COLLECTIONS / BANKRUPTCY / FORECLOSURE / REO / DEFAULT REPORTING ..........13

L. INVESTOR REPORTING REQUIREMENTS ...........................................14

M. ASSIGNMENTS/DOCUMENT CUSTODIAN ............................................14

N. SPECIAL LOANS .............................................................14

O. RECORDS/MICROFILM .........................................................15

P. POST TRANSFER DATE PROCEDURES .............................................15

<PAGE>

A.    GENERAL REQUIREMENTS

1.    General Reports, Records and /or Listing Required

      1A.   Automated Conversion Data

            1A1.  All necessary master file data to be provided to WAMU in an
                  acceptable data media. Electronic files should agree to the
                  investor cut-off date and should not include zero principal
                  balance loans. Test and conversion reports due two days after
                  each month-end cut-off. Please send to:

                              coordinator @wamu.net

            1A2.  Trial balance generated off the servicing workstation (One
                  hard copy during the interim servicing period).

            1A3.  Trial balances will be generated for each month-end after the
                  Settlement Date. For example if the Settlement Date is January
                  1, 2002. Seller will generate a trial balance as of January
                  month-end and continue to supply at each month-end until the
                  Transfer Date. On Transfer Date, please fax the final page by
                  9:00 a.m. CST to allow WAMU to balance.

            1A4.  Please provide the following reports for every month end after
                  the Settlement Date and at Transfer Date or as requested:

<TABLE>
<S>                                                  <C>
Trial balance report (Alltel report 4TB)             Open items report

Force placed insurance report                        Flood insurance report

Optional insurance report                            Restricted escrow listing

Binder coverage listing                              Mortgage insurance listing

Buydown loan listing                                 Bankruptcy trial balance

Drafted loans listing                                Escrow header listing

Foreclosure trial balances                           No longer match criteria

Tax and Hazard listing (Alltel report 10P-2 & 3)     Delinquency report separating by 30, 60, 90 & 120 days

List of balloon loans                                List of loans with a pre-payment penalty
</TABLE>

                  Once all of the loans have been identified please provide a
                  file or disk in excel format listing Seller's loan number,
                  mortgagors last name, original UPB and investor loan number.

      1B.   Original servicing file complete in all material respects including
            copies, servicing correspondence, and other related documentation 5
            Business Days after Transfer Date.

      1C.   Set of histories and escrow analysis from inception of each loan on
            microfiche or paper if history data is not being converted. 5
            Business Days after Transfer Date.

      1D.   Wires to Purchaser within 5 Business Days after the Transfer Date.

                                       2
<PAGE>


            1D1.  A wire to Purchaser for all escrow, suspense, buy-down and
                  loss draft funds (where applicable) as of the Transfer Date
                  with a detailed listing, by loan number, showing how the funds
                  are to be applied.

            1D2.  A report representing all suspense funds and a listing showing
                  the application for each unapplied payment. Provide reason for
                  each suspense item.

            1D3.  Please provide a detail listing of recoverable corporate
                  advances and include a copy of the paid invoices. Upon receipt
                  and review, Washington Mutual will reimburse.

                  (DO NOT NET THE FUNDS FROM THE FINAL REMITTANCE)

                              Wiring Instructions:
                                Washington Mutual
                                  Stockton, CA
                                 ABA# 321180748
                               Account #1791709406
                      Credit: Washington Mutual Bank, F.A.
                            Attn: Investor Accounting

      1E.   Sample of letter to appropriate insurance companies/agents
            requesting endorsements to reflect transfer to Purchaser and address
            of Purchaser (i.e.: flood, flood certification, PMI, MIP, hazard
            mortgage, accident, health, and life insurance companies should
            receive these notifications) to be approved by WAMU prior to the
            mailing.

      1F.   Sample of the good-bye letters to borrowers advising of the change
            in Servicer and pertinent related information. To be approved by
            WAMU prior to the mailing.

      1G.   Listing of all loans with pending payoffs (a copy of the payoff
            statement issued to the borrower must accompany this list), pending
            partial releases, and any other special items.

      1H.   Evidence of TIN certification and that all 1098 requirements have
            been met within 5 Business Days after the Transfer Date.

      1I.   Seller agrees to prepare tax and interest statements for the period
            of January 1, 2002 through Transfer Date.

      1J.   Other documents or information that Purchaser may reasonably request
            which are available to Seller.

      1K.   Please provide after the last Settlement Date with WAMU Securities
            and at time of transfer a list of Co-op Loans.

      1L.   List of buy-down loans.

      1M.   Provide a list of loans with payment variances (i.e., Forbearance
            Plans), if applicable and backup notes.


                                       3
<PAGE>

B.    ESCROW/IOE

2.    Interest on escrow - Matrix indicating when interest is posted (monthly,
      quarterly, etc.).

      2A.   Listing of state(s) requiring payment of interest on escrow to be
            received 45 days prior to Transfer Date.

      2B.   Evidence that all accrued interest due on escrow has been posted to
            accounts through cut-off date two days after Transfer Date.

C.    ACH DRAFTING/BI-SAVERS

3.    WAMU will continue to draft all ACH customers, unless otherwise notified.
      For Alltel clients that ACH will convert, please place a bad check stop so
      that no drafting will happen after the Transfer Date. Please do not delete
      the ACH information prior to the Transfer Date. Please provide the Alltel
      1LD report as of the Transfer Date.

4.    Billing method (i.e., coupons, monthly billing).

5.    A listing of loans set up on the Bi-Saver program along with a description
      of the Bi-Saver schedule that they are on. Please provide this information
      45 days prior to Transfer Date. Please provide a copy of the notification
      letter to WAMU.


                                       4
<PAGE>

D.    HAZARD INSURANCE INFORMATION

6.    Insurance files

      6A.   Seller must provide complete and accurate information concerning all
            insurance records (from the servicing system) in accordance with
            agency guidelines. This should include but not limited to the
            following, where applicable:

            6A1.  Current homeowner's or fire policy number

            6A2.  Current flood insurance policy number

            6A3.  Current catastrophe policies number

            6A4.  Windstorm policies number

            6A5.  All other policies, correspondence, or information

      6B.   In addition, the following information is needed for each escrow
            detail:

            6B1.  Payee (agent and/or carrier)

            6B2.  Policy expiration date

            6B3.  Coverage amount

            6B4.  The total annual premium

NOTE: WAMU Mortgage flood contracts are with Lereta. If Seller does not use
Lereta, Purchaser is responsible for the costs incurred to set up new, life of
loan, flood contracts with Lereta. Seller to provide Purchaser with all Flood
determinations on transferable life of loan in Alltel format (to be provided
prior to Transfer Date). If flood contracts are not transferable or with a
company WAMU does not use, contracts are to be canceled. Please contact the
flood companies to transfer the flood certifications to Washington Mutual.
Please provide WAMU with copies of the notification letters.

7.    Reports and records

      7A.   Purchaser shall be provided the following within 5 Business Days
            after Transfer Date:

            7A1.  Seller will be responsible for the payment of any insurance
                  premiums due within 30 days after the Transfer Date. Seller to
                  provide WAMU with a listing of all expired or unpaid policies
                  through 30 days after Transfer Date sorted by insurance type
                  (hazard, flood, etc.). Open items report.

            7A2.  A separate listing should be prepared showing those loans for
                  which flood, earthquake and/or windstorm insurance is
                  required. It should also include the expiration date &
                  insurance company names.

            7A3.  Listing of all loans on direct or mass billings.


                                       5
<PAGE>

            7A4.  If flood insurance audit was completed in last 12 months,
                  provide a copy of findings with date of last audit.

            7A5.  List of all accounts with no hazard insurance

8.    Change endorsements

      8A.   For each loan in the transfer, notification of the transfer should
            be mailed to the insurance carriers and applicable insurance agents
            to substitute the lender loss payable endorsement on hazard and
            private mortgage insurance policies. If it is determined the flood
            contracts are transferring the change should occur as well. These
            notices must be mailed 15 days prior to the Transfer Date and
            include reference to the WAMU loan number.

      8B.   A copy of the mortgagee clause notification letter should be faxed
            to WAMU prior to mailing to verify the correct wording of the
            mortgagee clause.

                  The new mortgagee clause endorsement should read as follows:

                          Washington Mutual Bank, F.A.
                          Its Successors and/or Assigns
                          P.O. Box 25064
                          Santa Ana, Ca 92799-5064

9.    Miscellaneous

      9A.   As of Transfer Date, Seller shall provide a listing of all insurance
            premiums due within 30 days of Transfer Date and not paid by Seller
            within 5 Business Days after Transfer Date.

10.   Binders

      10A.  Provide a listing of all loans with forced place coverage for both
            hazard and flood along with the name of the company and expiration
            date (including copy of the policy) within (5) Business Days after
            Transfer Date.

E.    LOSS DRAFTS

11.   Information required on loss drafts pending

      11A.  Seller shall provide Purchaser with a listing of all loans having a
            loss draft pending within 5 Business Days after Transfer Date.

      11B.  In addition to this listing, Purchaser shall receive loss draft
            files/information for each loan which contains the following
            information, properly documented 3 - 5 Business Days after Transfer
            Date:

            11B1. Date of loss.

            11B2. Cause of loss.

            11B3. Amount of loss.

                                       6
<PAGE>


            11B4. Amount of insurance proceeds received to date & copies of
                  checks received and disbursed.

            11B5. Information received from contractors or record of
                  conversations with contractors.

            11B6. Correspondence from and/or record of conversation with
                  borrowers and insurance companies

            11B7. Status reports on repairs.

            11B8. Inspection reports, if any.

            11B9. Report on receipt of future proceeds (date expected, amount,
                  etc.).

      11C.  All loss draft checks received by Seller after Transfer Date should
            be:

            11C1. Clearly identified with the Seller's loan number in the upper
                  right hand corner of the check.

            11C2. Date stamped and properly endorsed.

            11C3. Forward to Purchaser via overnight delivery service to:

                          Washington Mutual Bank, F.A.
                                 P.O. Box 100562
                             Florence, SC 29501-0562
                       Attention: Loss Drafts - Mary Fogle


                                       7
<PAGE>

F.    TAX INFORMATION

12.   Washington Mutual uses 2 Tax Service Providers - Lereta and Transamerica
      Tax Service. Lereta contracts all loans for the West Coast States
      only/Transamerica contracts for the East Coast States only. The state
      breakdown can be located in the Washington Mutual Mortgage Securities
      Corp. Seller Guide: Appendices. Appendix D. Tax service Fee Schedule. All
      Loans will be transferred with life of loan transferable contracts. Seller
      must notify the applicable tax service to determine the status of the tax
      contracts. WAMU will need a copy of that notification. The Seller must
      work with the tax service to ensure that all loans are contracted prior to
      Transfer Date. In order to ensure that the tax contracts are set up
      /transferred correctly, WAMU is requiring that 30 days prior to the
      Transfer Date the seller must have their tax service provide Lereta Tax
      Service with the tax contract information tape (Tax tape). A final Tax
      tape will also be required at the transfer date. This final tape should
      only include the loans that transferred to WAMU. The final tape is
      required within 5 business days after the transfer date. The tapes will
      need to be sent to the following address:

            Lereta Tax Service
            1123 S. Parlview Drive
            Covina, CA 91724
            Attn: Ed Mathews
            626-543-1300 ext. 112

      For those loans that transfer without contracts, WAMU will require a valid
      legal description and be responsible for any costs incurred in connection
      with those tax contracts. Seller to provide to WAMU with the following
      information within 5 Business Days after the Final Settlement Date and
      within 5 Business Days after the Transfer Date:

      12A.  Open items report. Seller is responsible for the paying all real
            estate taxes, ground rents, water, sewer and municipal charges,
            leasehold payments or similar items that are required to be paid
            within 30 days after the transfer date.

      12B.  Report of all loans without tax service contracts.

      12C.  Forward all bills received after Transfer Date to:

            Lereta Tax Service
            1123 S. Parlview Drive
            Covina, CA 91724
            Attn: Ed Mathews
            626-543-1300 ext. 112

      12D.  Seller will provide paid bills and/or receipts for loans included in
            each applicable Transfer Date on an as needed basis within 5 days of
            request.

      12E.  Listing of loans pending tax refunds.

      12F.  Seller to provide permission for Lereta to provide any and all
            historical and backup information to the Purchaser.


                                       8
<PAGE>

G.    FHA/MIP/PMI INFORMATION

13.   Notice of change of servicer

      13A.  Seller to provide Purchaser with fiche copies of notification to all
            PMI companies involved with loans included in Transfer Date. Please
            forward this to WAMU within 5 Business Days after the Transfer Date.

14.  Payment of premiums

      14A.  Seller to pay all PMI/MIP premiums due prior to the Transfer Date.

15.   Miscellaneous reports due to Purchaser to be received 5 Business Days
      after the final settlement date and 3-5 Business Days after the Transfer
      Date.

      15A.  For each FHA loan, with monthly premiums, Sellers shall prepare a
            listing in their loan number order which will include the following.

            15A1. FHA case number

            15A2. Anniversary due date

            15A3. Monthly remittance amount

            15A4. Next month for which MIP is due

            15A5. Amount of Annual MIP due HUD as shown by HUD on their advance
                  Notice of S/F Annual MIP notice

            15A6. Total amount of MIP paid year to date

      15B.  Seller agrees to reimburse WAMU for any and all interest and/or late
            charges assessed which result from delinquent payment of premiums
            due prior to the Transfer Date.

      15C.  Provide a disk of loans with LTV's greater than 80% without PMI at
            Transfer Date.

      15D.  Listing of loans with lender paid PMI/MI with amounts paid
            (monthly/annually). If applicable, an accounting of the percentage
            for paying the insurance along with a wire of the funds.

      15E.  PMI Certification Uninsured Report.


                                       9
<PAGE>

H.    LIFE, A&H DISABILITY AND OTHER "OPTIONAL" INSURANCE

16.   Seller will provide WAMU with a listing of accounts with optional
      insurance 5 Business Days after the Final Settlement date and 60 days
      prior to Transfer Date.

      16A.  Records and Information Required

            16A1. Sellers' loan number.

            16A2. Mortgagor(s) name(s) and insured(s) name(s).

            16A3. Policy/Certificate number (exception report to be provided
                  where information is not available).

            16A4. Type of insurance & insurance carrier.

            16A5. Effective date (exception report to be provided where
                  information is not available).

            16A6. Amount of premium.

            16A7. Due date of premium.

            16A8. Payee codes

      16B.  A list of those mortgagors receiving benefits under a policy claim;
            this list should contain the name, loan number, insurance benefit
            amount and insurance company. A copy of the claim file should also
            be sent.

      16C.  List of loans in transfer with open and closed claims.

      16D.  Copy of certificate/policy/master policy for each type of coverage
            maintained (exception report to be provided where the information is
            not available).

      16E.  Notify each insurance carrier at least 15 days prior to the Transfer
            Date.

      16F.  Provide A&H disability rates.

I.    ASSUMPTIONS

17.   Assumption information pending at time of transfer due to Purchaser within
      3 - 5 Business Days after Transfer Date.

      17A.  Seller shall provide Purchaser with a listing of all loans pending
            assumption as of a Transfer Date.

      17B.  Seller shall provide Purchaser with a current status report on each
            pending assumption which indicates the stages of completion.

      17C.  Seller shall forward to Purchaser via overnight delivery all
            required documents for each loan(s) on which the assumption
            processing has not been completed.


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<PAGE>

18.   Information required pending assumption statements

      18A.  Sellers shall provide Purchaser with copies of all assumption
            statements/packages issued up to Transfer Date for which no
            assumption papers have been received 3 - 5 Business Days after
            Transfer Date.

      18B.  The assumption statements should be placed, in Sellers' loan number
            order, in separate files appropriately labeled.

19.   Information required on name changes

      19A.  Seller shall provide a listing of all pending legal name changes
            along with the appropriate documentation (quit claims, death
            certificates, divorce decrees, etc.) 3 - 5 business days after
            Transfer Date.


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<PAGE>

J.    PAID-IN-FULL AND PARTIAL RELEASES

20.   Information required on pending paid-In-full

      20A.  All checks received through Transfer Date are to be applied.

      20B.  Paid-in-full checks received, but not applied by Transfer Date, will
            be endorsed and date stamped and forwarded immediately upon receipt
            via over night mail to Purchaser. Each check should indicate the
            Sellers' loan number WAMU loan number, mortgagor name, property city
            and state.

                        Washington Mutual Bank, F.A.
                        11200 W. Parkland Avenue
                        Suite 908
                        Attn.: Payoff Dept.
                        Milwaukee, WI  53224

      20C.  If payoff funds are being wired, please call and notify WAMU when
            funds are being wired. Use the following wiring instructions:

                        Bank: Washington Mutual, Stockton, CA
                        Credit to: Washington Mutual Bank. F.A.
                        Account No.: 182380181590
                        ABA: 075000022
                        Reference: Payoff funds for WAMU loan #
                        MUST LIST WAMU MTG'S LOAN NUMBER

      20D.  Seller agrees to reimburse Purchaser for additional per diem
            interest on any payoff not forwarded to Purchaser within 24 hours of
            receipt. Seller will forward to WAMU a check in the appropriate
            amount upon their receipt of appropriately documented request.

21.   Information required on pending partial releases (if applicable)

      21A.  Seller shall provide Purchaser with a listing of all loans, on which
            a partial release is pending, along with an explanation for each
            case, and all documentation received to date 3 - 5 Business Days
            after Transfer Date.

      21B.  Seller shall provide Purchaser with copies of all correspondence
            forwarded to any governmental agency or investor for their approval
            3 -5 Business Days after Transfer Date.


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<PAGE>

K.    COLLECTIONS / BANKRUPTCY / FORECLOSURE / REO / DEFAULT REPORTING

22.   Collection records and reports required

      22A.  Seller shall provide to Purchaser the following within 3 -5 Business
            Days after Transfer Date:

            22A1. All collection records.

            22A2. Files on accounts 60 or more days past due must include all
                  collection documents, including collection comments/history
                  and copies of all letters to the mortgagor that pertain to the
                  current default as well as copy of the most recent property
                  inspection.

            22A3. A delinquency report sorted by 30, 60 and 90+ days,
                  foreclosure and bankruptcy.

      22B.  Listing of all accounts currently on a repayment plan (please note
            that Purchaser will honor signed written repay agreements only) - 2
            weeks prior to Transfer Date and 2 days after Transfer Date.

      22C.  Collection files related to default reporting. These files should
            contain copies of all required default notices on the FHA, VA and
            /or private investor forms 3 - 5 Business Days after Transfer Date.

      22D.  All on-line collection activity report will be microfiche and
            provided to WAMU.

      22E.  Originals or copies of all bills or receipts for Corporate Advances
            (attorney fees, property preservation, etc.) in each individual file
            to be received 3 -5 Business Days after Transfer Date.

      22F.  A Payee Code Listing identifying all payees 3 -5 Business Days after
            Transfer Date (alpha order).

      22G.  Individual Bankruptcy, Foreclosure, and REO files. Please ensure any
            bills are in the files. The files need to be shipped to the address
            listed below.

      22H.  List of loans being considered for HUD assistance, Deed in Lieu, or
            any other Loss Mitigation programs.

      22I.  Copies of the notification to Attorneys and Trustees:

                            Washington Mutual Bank, F.A..
                            P.O. Box 1093
                            North Ridge, CA 91328
                            Attention: Foreclosure/ Bankruptcy Dept.

23.   Corporate advance

      23A.  Corporate advance activity by payee - from inception date.

24.   List of loans in Foreclosure, REO, and Bankruptcy with loss drafts pending
      3 -5 Business Days after Transfer Date.


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<PAGE>

L.    INVESTOR REPORTING REQUIREMENTS

25.   The remittance type for these loans is scheduled / scheduled. At the time
      of transfer we will need to settle the pre-paids vs. delinquents. If an
      Alltel client please provide the P139, 50Y and T62D reports within 5
      Business Days after the Transfer Date. Please contact WAMU for non-Alltel
      clients for comparable reports.

M.    ASSIGNMENTS/DOCUMENT CUSTODIAN

      26.   A.    Please ensure the notes are properly endorsed and assignments
                  are prepared to the Trustee's and sent out for recording.

N.    SPECIAL LOANS

27.   Buydown Loans

      27A.  Within 3 -5 Business Days of the Transfer Date, the Seller must
            provide the report identifying all buy- down loans with funds
            remaining, which reflect the following:

            27A1. P & I's or subsidies

            27A2. Payment effective dates

            27A3. Notice of last date of borrower notification

            27A4. Please provide the list of the buy-down loans and copies of
                  the buy-down agreements 60 days prior to the Transfer Date and
                  provide a list of buy-down loans after the Transfer Date, as
                  well.

28.   Graduated Payment Mortgage Loans N/A

29.   ARM Loans

      29A.  Twenty (20) days prior to the Transfer Date, the Seller must provide
            Purchaser with report(s) identifying:

            29A1. All ARM loans

            29A2. If convertible, what the fixed rate calculation parameters are
                  based on.

            29A3. Each ARM product as reflected on the current servicing system,
                  identifying what the adjustment parameters are.

            29A4. The next interest rate/payment change dates.

            29A5. Copies of the last payment change notices and notice of last
                  date of borrower notification.


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<PAGE>

30.   Balloon Loans

      30A.  Within 3 - 5 Business Days of the Transfer Date, the Seller must
            provide Purchaser with report(s) of all Balloon loans indicating:

            30A1. Product type

            30A2. Maturity date

O.    RECORDS/MICROFILM

31.   Arrangements shall be made for inside delivery 3 - 5 Business Days after
      the Transfer Date of the files and records being transferred.

32.   WAMU can provide Seller with labels to be placed on the loan files.

33.   Transmittals must be used for all shipments.

      33A.  Manifest must be in each box

34.   Loan files/microfiche should be forwarded to:

                      Washington Mutual Bank, F.A.
                      Attn: Acquisitions/Karen Cook
                      970 Corporate Woods Parkway
                      Vernon Hills, IL  60061

P.    POST TRANSFER DATE PROCEDURES

35.   Mortgage payments received after Transfer Date

      35A.  Any mortgage payments received by Seller after Transfer Date should
            be:

            35A1. Clearly identified with WAMU's loan number in the upper right
                  hand corner of the check.

            35A2. Date stamped and properly endorsed.

36.   Payments must be forwarded to Purchaser on a daily basis.

      37A.  All checks received by Seller should be date stamped and endorsed as
            follows:

                            Pay to the Order of
                            Washington Mutual Bank, F.A.
                            Without Recourse
                            By:____________________________
                            _______________________________

      37B.  For a period of sixty (60) days following the Transfer Date(s)
            Seller will send all moneys received to Purchaser via overnight
            delivery. After sixty (60) days following the Transfer Date(s).
            Seller will return all payments received by Seller to mortgagors
            with instructions to remit directly to Purchaser.



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<PAGE>

      38.   NSF checks after Transfer Date

      38A.  All checks related to NSF's, NSF on draft accounts, stop payments,
            etc., which were not reversed by Seller prior to cut-off will be
            handled as follows:

                            Washington Mutual Bank, F.A.
                            Payment Processing - Alltel
                            9601 McAllister Freeway
                            San Antonio, TX  78216-4681

            38A1. Seller will forward original items to WAMU

            38A2. Upon receipt, Purchaser will reverse funds from the
                  appropriate account(s).

            38A3. Upon reversal, WAMU will forward funds to Seller.

39.   Other checks received after Transfer Date

      39A.  The following procedures will apply to checks (other than payments,
            NSF's or stop payments) received by Seller after Transfer Date:

            39A1. Check will be clearly identified with the Sellers' loan number
                  in the upper right hand corner.

            39A2. Checks that include funds for two or more accounts should be
                  accompanied by detail as reasonable, providing Sellers' loan
                  number and amount due to each account.

            39A3. Checks should be properly endorsed.

            39A4. Purpose of check should be identified and grouped accordingly
                  (i.e. tax refund, loss draft, payment of special insurance,
                  principal payment, etc.).

            39A5. Checks should be forwarded to Purchaser via overnight delivery
                  service to:

                                Washington Mutual Bank, F.A.
                                C/o EDS.
                                2220 Chemsearch, Suite 120
                                Irving, TX 75062

41.   Seller agrees to pay expenses of overnight delivery service on all items
      being forwarded to Purchaser for a period of sixty (60) days.

42.   Correspondence received after Transfer Date

      42A.  All customer inquiries received by Seller after Transfer Date should
            be identified with the Sellers' loan number and forwarded (via
            overnight delivery) on a daily basis to:

                          Washington Mutual Bank, F.A.
                          P.O. Box 3139
                          Attention: Customer Service Department
                          Milwaukee, WI  53201-3139




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<PAGE>

                                    EXHIBIT F

             FORM OF BACK-UP CERTIFICATION TO FORM 10-K CERTIFICATE

      I, [identify the certifying individual], on behalf of ABN AMRO Mortgage
Group, Inc. ("AAMG") certify that:

      1. I have reviewed the annual report on Form 10-K for the fiscal year
[___], and all reports on Form 8-K containing distribution or servicing reports
filed in respect of periods included in the year covered by that annual report,
of the trust (the "Trust") created pursuant to the Pooling and Servicing
Agreement dated December 1, 2003 (the "P&S Agreement") among ABN AMRO Mortgage
Corporation (the "Depositor"), ABN AMRO Mortgage Group, Inc. (the "Servicer")
and JPMorgan Chase Bank (the "Trustee"); and

      2. Based on my knowledge, the information in these reports and any other
information provided by AAMG, taken as a whole, does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which the statements
were made, not misleading as of the last day of the period covered by that
annual report.

Date:____________


____________________________
[Signature]
Name:
Title:



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