SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                   FORM 10-K/A
                                 Amendment No.1


(Mark One)

/     x / ANNUAL  REPORT  PURSUANT  TO  SECTION  13 OR  15(d) OF THE  SECURITIES
      EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 1999 or

/   / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
      SECURITIES EXCHANGE ACT OF 1934


      Commission File No.:   333-68513-04

    Structured Asset Securities Corporation
    Mortgage Pass-Through Certificates Series  1999-SP1 Trust
        (Exact name of registrant as specified in its charter)



New York                         52-2183749   52-2183751    52-2183754
                                 52-2183750   52-2183753
(State or other jurisdiction     (I.R.S. Employer
 of incorporation or              Identification  No.)
 organization)

c/o Wells Fargo Bank Minnesota, N.A.
11000 Broken Land Parkway
Columbia, Maryland                            21044
(Address of principal executive offices)     (ZIP Code)


Registrant's telephone number, including area code:
     (410) 884-2000

Securities to be registered pursuant to Section 12(b) of the Act:

     NONE

Securities to be registered pursuant to Section 12(g) of the Act:

     NONE

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

     Yes   X          No ___


This Amendment No. 1 on Form 10-K/A amends Item 14 of the original Annual Report
on Form 10-K (the  "Original  Form 10-K") filed on March 24, 2000,  on behalf of
Structured  Asset  Securities  Corporation  Mortgage  Pass-Through  Certificates
Series  1999-SP1 Trust  established  pursuant to the Trust Agreement among
Structured  Asset  Securities  Corporation  as  Depositor,  Wells Fargo Bank
Minnesota,  N.A. as Master Servicer,  and The First National Bank Of Chicago, as
Trustee pursuant to which the Structured Asset Securities  Corporation  Mortgage
Pass-Through  Certificates Series 1999-SP1 Trust registered under the Securities
Act of 1933 (the "Certificates") were issued.


Item 14 of the original Form 10K is amended in its entirety to read as follows:

Item 14.  Exhibits, Financial Statement Schedules, and Reports
          on Form 8-K.

          (a) Exhibits

              (99.1) Annual   Independent    Accountants'    Servicing   Reports
                     concerning servicing activities for the year ended December
                     31, 1999.


                     a)  Ocwen Federal Bank FSB <F1>


             (99.2)  Report  of  Management   as  to  Compliance   with  Minimum
                     Servicing Standards for the year ended December 31, 1999.

                     a)   Ocwen Federal Bank FSB <F1>


              (99.3) Annual  Statements  of  Compliance  under the  Pooling  and
                     Servicing Agreements for the year ended December 31, 1999.

                     a)   Ocwen Federal Bank FSB <F1>


              (99.4) Aggregate Statement of Principal and Interest Distributions
                     to Certificates Holders. <F2>


            (b)  On October 8, 1999,  November  8, 1999,  and  December 7, 1999,
                 reports  on Form 8-K  were  filed  by the  Company  in order to
                 provide the statements for the monthly distributions to holders
                 of the  Certificates.  No other  reports  on Form 8-K have been
                 filed  during the last  quarter  of the period  covered by this
                 report.

            (c) Not applicable.

            (d)  Omitted.

<F1>  Filed herewith.
<F2>  Previously filed.

                           SIGNATURE

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned, thereunto duly authorized:

 Structured Asset Securities Corporation
 Mortgage Pass-Through Certificates, Series 1999-SP1 Trust


Signed:  First National Bank of Chicago as Trustee

By:   Keith Richardson, Officer
By:  /s/  Keith Richardson, Officer

Dated:  April 6, 2001


Exhibit Index

Exhibit No.

99.1      Annual Independent Accountants' Servicing Reports concerning servicing
          activities for the year ended December 31, 1999.


                     a)  Ocwen Federal Bank FSB <F1>


99.2      Report of Management as to Compliance with Minimum Servicing Standards
          for the year ended December 31, 1999.

                     a)   Ocwen Federal Bank FSB <F1>

99.3      Annual  Statements  of  Compliance  under the  Pooling  and  Servicing
          Agreements for the year ended December 31, 1999.

                     a)   Ocwen Federal Bank  FSB <F1>


99.4      Aggregate Statement of Principal and Interest Distributions to
          Certificate Holders.<F2>

<F1>  Filed herewith.
<F2>  Previously filed.


           EX-99.1 (a)
    Annual Independant Accountant's Servicing Report


(LOGO) PRICEWATERHOUSECOOPERS



PricewaterhouseCoopers LLP
200 East Las Olas Boulevard
Suite 1700
Ft. Lauderdale FL 33301
Telephone (954) 764 7111
Facsimile (954) 525 4453

REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

To the Board of Directors of
Ocwen Federal Bank FSB

We have  examined  management's  assertion  about Ocwen Federal Bank FSB's ("the
Bank")  compliance  with  the  minimum  servicing  standards  identified  in the
Mortgage  Bankers  Association of America's  (MBA's) Uniform Single  Attestation
Program for Mortgage  Bankers  (USAP) as of and for the year ended  December 31,
1999,  included  in  the  accompanying   management  assertion.   Management  is
responsible for the Bank's  compliance with those minimum  servicing  standards.
Our responsibility is to express an opinion on management's  assertion about the
entity's compliance based on our examination.

Our  examination  was  made in  accordance  with  standards  established  by the
American  Institute of Certified Public Accountants and,  accordingly,  included
examining,  on a test  basis,  evidence  about the  Bank's  compliance  with the
minimum servicing  standards and performing such other procedures as we consider
necessary  in the  circumstances.  We believe  that our  examination  provides a
reasonable  basis for our  opinion.  Our  examination  does not  provide a legal
determination on the Bank's compliance with the minimum servicing standards.

In  our  opinion,  management's  assertion  that  the  Bank  complied  with  the
aforementioned minimum servicing standards as of and for the year ended December
31, 1999 is fairly stated, in all material respects.



PricewaterhouseCoopers LLP


Fort Lauderdale, Florida
March 24, 2000

   EX-99.2 (a)
 Report of Management

OCWEN (LOGO)

MANAGEMENT ASSERTION ON COMPLIANCE WITH USAP

March 24, 2000

As of and for the year ended  December 31, 1999,  except as  specifically  noted
below, Ocwen Federal Bank FSB (the "Bank") has complied in all material respects
with  the  minimum  servicing  standards  set  forth  in  the  Mortgage  Bankers
Association of America's ("MBA's') Uniform Single Attestation Program for
Mortgage Bankers ("USAP").

Standard:   Custodial   bank   accounts  and  related  bank   clearing   account
reconciliations  shall be prepared within 45 calendar days after the cutoff date
and documented  reconciling  items shall be resolved  within 90 calendar days of
their original identification.

During 1999, certain of the Bank's 1999 custodial account  reconciliations  were
not   prepared   within  45  days  after  the  cutoff   date.   However,   these
reconciliations  and all subsequent  reconcilations  have been prepared  through
December 31, 1999.

In  addition,  certain  reconciling  items  which  arose  during  the year ended
December  31,  1999 were not  specifically  identified  and/or  were not cleared
within 90 days of  identification.  Management  has developed an action plan and
has continued to follow the action plan to resolve all  outstanding  reconciling
items. All significant  reconciling items have been isolated and reviewed by the
Company, and the Company believes these items will not have a material impact on
the status of any custodial accounts.

Standard:  Mortgage  payments  shall be deposited  into the custodial bank
accounts and related bank clearing  accounts  within two business day's of
receipt.

Mortgage  payments  were  credited  to  the  investors  in the  Bank's  internal
servicing records within two business days of receipt. However, certain mortgage
payments were not deposited into  investors'  custodial bank accounts within two
business days of receipt.

Standard:  Escrow funds held in trust for a mortgagor shall be returned to
the  mortgagor  within thirty (30) calendar days of payoff of the mortgage
loan.

During 1999, escrow funds held in trust for certain mortgagors were not returned
to the  mortgagor  within  thirty  days of the  payoff of their  mortgage  loan.
However,  these escrow funds were returned within the required number of days as
required by the Real Estate Settlement Procedures Act.

As of and for this same  period,  the Bank had in effect a fidelity  bond in the
amount  of  $15,000,000  and an errors  and  omissions  policy in the  amount of
$10,000,000.

Ronald M. Faris
Executive Vice President

Scott W. Anderson
Vice President of Residential Assets

Joseph P.Hillery
Director Of Investor Reporting

   EX-99.3 (a)
 Annual Statement of Compliance


(LOGO) OCWEN


OFFICER'S CERTIFICATE ON ANNUAL STATEMENT AS TO COMPLIANCE

March 24, 2000

Pursuant to the  applicable  sections of the  Servicing  Agreements,  I Scott W.
Anderson as officer of Ocwen Federal Bank FSB (the "Bank") confirm that a review
of the activities of the Bank ended  December 31, 1999 and of performance  under
the Servicing  Agreements has been made under my supervision.  To the best of my
knowledge,  based on such review,  the Bank has fulfilled all of its obligations
under the Servicing Agreement  throughout the period, other than as noted in the
Management Assertion on Compliance with USAP.

Scott W. Anderson
Vice President of Residential Assets