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                                                                   EXHIBIT 10.11

                          TRANSITION SERVICES AGREEMENT

         This Transition Services Agreement is entered into as of October 30,
2002 by and between The BISYS Group, Inc. (the "Company") and Lynn J. Mangum,
Chairman and Chief Executive Officer of BISYS.

         Whereas, Mr. Mangum and the Company desire to provide for an orderly
transition of the duties and responsibilities of the Chief Executive Officer as
part of the Company's CEO succession planning and for the Company to obtain the
benefit of Mr. Mangum's years of experience as Chairman and CEO of the Company
in connection with such transition.

         Now, therefore, the parties enter this Agreement on the following terms
and conditions:

     1.     ROLE. Effective December 31, 2002, Mr. Mangum shall resign as Chief
            Executive Officer of BISYS and shall cease to be an executive
            officer of the Company on that date. Mr. Mangum shall continue as an
            employee of BISYS until his retirement upon reaching the age of 65
            on August 18, 2007 with the duties and responsibilities as set forth
            herein. Mr. Mangum shall continue as Chairman of the Board of
            Directors in accordance with the By-Laws of the Company and shall
            resign as a Director effective August 31, 2004, unless continued
            service as a Director beyond that date is mutually agreed.

     2.     DUTIES AND RESPONSIBILITIES. Following December 31, 2002 through
            August 31, 2004, Mr. Mangum's duties and responsibilities shall
            include, without limitation, assisting the CEO in corporate
            acquisition activities, European marketplace business development
            initiatives, strategic planning and overall guidance of the
            business. In addition, during his tenure as an employee of the
            Company, Mr. Mangum shall (a) provide such transition and other
            assistance as is requested from time to time by the CEO and by the
            Board of Directors, (b) report solely to the CEO and the Board of
            Directors, (c) provide services exclusively to the Company, and (d)
            be considered a full-time employee of the Company for purposes of
            all employee benefits plans and programs of the Company.

     3.     BASE SALARY. Effective January 1, 2003, Mr. Mangum shall receive an
            annual base salary of $750,000. Effective September 1, 2004 through
            his retirement as an employee of the Company, Mr. Mangum shall
            receive an annual base salary of $375,000.

     4.     ANNUAL BONUS. Mr. Mangum's annual bonus target for FY'03 shall
            continue to be $700,000 as previously approved by the Board of
            Directors, and shall be determined based on the strategic
            positioning of the Company and the Company's achievement of the
            revenue and earnings per share growth under its FY'03 Plan after
            giving due consideration to the degree of difficulty in achieving
            the growth implicit in the Plan. Thereafter, Mr. Mangum's annual
            bonus opportunity shall be determined at the beginning of each
            fiscal year by the Compensation Committee of the Board of Directors
            upon the recommendation of the CEO with a target opportunity
            compared to annual base salary consistent with prior periods and
            measured by the achievement of individual accomplishments. The
            actual incentive compensation payable to Mr. Mangum shall be
            determined by the Compensation Committee of the Board.

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     5.     STOCK OPTIONS/STOCK OWNERSHIP. The options previously granted to Mr.
            Mangum and outstanding as of the date hereof shall continue in
            effect in accordance with their terms; provided that effective the
            date hereof (a) the stock options previously granted to Mr. Mangum
            that are "in the money" as of the date hereof, shall vest on the
            date that Mr. Mangum ceases to be Chairman of the Board of
            Directors, to the extent not previously vested, and shall be
            exercisable, to the extent not previously exercised, for the 30-day
            period following such date, and (b) the options previously granted
            to Mr. Mangum, including reload stock options, with an exercise
            price greater than the fair market value of a share of Common Stock
            of the Company based on the last sale price of a share of Common
            Stock on October 29, 2002, as reported by the New York Stock
            Exchange, shall each be vested to the extent not previously vested
            as of the date Mr. Mangum ceases to be Chairman of the Board of
            Directors and shall thereafter be exercisable for the full 10-year
            term of the option, to the extent not previously exercised. Mr.
            Mangum shall continue to be eligible for future stock option grants
            as approved by the Compensation Committee of the Board. The
            Non-Compete Agreement dated August 4, 1993 entered into by Mr.
            Mangum in consideration of the grant of stock options and such other
            restrictive covenant agreements that may apply to Mr. Mangum during
            his tenure as an employee and thereafter shall continue in effect in
            accordance with their terms. Mr. Mangum shall, to the extent he
            determines to sell shares of Common Stock of the Company during his
            term as a Director of the Company while subject to the reporting
            obligations pursuant to the rules of the Securities and Exchange
            Commission, attempt to sell such shares in an orderly fashion.

     6.     OUTSTANDING LOANS. The Executive Loan Agreement between the Company
            and Mr. Mangum dated September 9, 1999 in the aggregate principal
            amount of $5,636,968.50 shall continue in accordance with its terms.
            The parties acknowledge and agree that the term of such loans shall
            not be extended or modified.

     7.     DEFERRED COMPENSATION PLAN. During the term of his employment with
            the Company, Mr. Mangum shall be eligible to continue to participate
            as a Senior Participant in the Company's Deferred Compensation Plan
            in accordance with its terms.

     8.     EMPLOYEE BENEFITS. Mr. Mangum shall be eligible to participate in
            all benefit programs offered to employees of the Company during the
            term of his employment with the Company, including but not limited
            to the Company's health and medical plans, 401(k) retirement plan
            and employee stock purchase plan. Not later than Mr. Mangum's
            retirement upon attainment of age 65, or as soon as practicable
            following Mr. Mangum's earlier termination of employment for any
            reason, the Company shall (a) procure, or (b) at Mr. Mangum's
            request, use its best efforts to assist Mr. Mangum in procuring, a
            separate insurance policy to provide health and medical coverage for
            the benefit of Mr. Mangum and his wife, Elizabeth Mangum, for their
            remaining lives, at a level comparable to the current coverage
            available to Mr. Mangum and his wife; provided that the maximum
            amount payable by the Company in any one year under clause (a) or
            (b) above shall not exceed $15,000. Mr. Mangum and his wife shall be
            responsible for the annual cost of such coverage in excess of
            $15,000.

     9.     SPLIT-DOLLAR INSURANCE. The existing split-dollar life insurance
            policy for the benefit of Mr. Mangum's designated beneficiary (ies)
            shall continue in effect in accordance

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            with its terms, subject to any limitations that may be imposed by
            statute or regulatory action.

     10.    FINANCIAL PLANNING/TAX PREPARATION SERVICES. Mr. Mangum shall be
            eligible to continue to receive financial planning/tax preparation
            services at the level currently available to him during the term of
            his employment with the Company.

     11.    OFFICE/ADMINISTRATIVE SUPPORT. During the period that Mr. Mangum
            serves as Chairman of the Board of Directors, he shall continue to
            use the office currently provided to him by the Company at the
            corporate headquarters. During the remaining period of his
            employment with the Company, Mr. Mangum shall be provided office
            space reasonably comparable to his current office. During the term
            of his employment, Mr. Mangum shall be entitled to receive customary
            executive secretarial and administrative support. At both the
            Company provided office and Mr. Mangum's home office, the Company
            shall provide services customarily available to an executive officer
            of the Company (e.g., personal computer, telephone and e-mail, voice
            mail and fax services). Mr. Mangum shall be reimbursed for all
            business expenses in accordance with the Company's expense
            reimbursement policy and shall have use of such services customarily
            available to executives of the Company in connection with the
            performance of his duties and responsibilities.

     12.    KEY EXECUTIVE SEPARATION AGREEMENT. The "Key Executive" Separation
            Agreement provided to Mr. Mangum by letter agreement dated June 9,
            1999 shall continue in effect in accordance with its terms during
            the term of Mr. Mangum's employment, except that in the event of a
            termination of Mr. Mangum's employment following -a Change of
            Control (as defined in such Agreement) after August 31, 2004, Mr.
            Mangum shall receive a lump sum payment equal to the product of (a)
            the sum of (i) his then present annual base salary and (ii) the
            greater of his then current fiscal year "at Plan" annual incentive
            compensation target and the amount paid in respect of the prior
            fiscal year, times (b) the number of whole and partial years
            remaining during the period from the termination of his employment
            with the Company until August 18, 2007.

     13.    MISCELLANEOUS.

            13.1  This Agreement shall be binding upon and inure to the benefit
                  of the parties and their respective heirs, legal
                  representatives, successors and permitted assigns.

            13.2  If any provision of this Agreement shall be determined by a
                  court of competent jurisdiction to be unenforceable for any
                  reason, such provision shall be deemed to be severable and
                  this Agreement shall otherwise continue in full force and
                  effect.

            13.3  The parties acknowledge that they have read this Agreement,
                  that they are relying solely upon the terms and conditions set
                  forth herein, and are not relying upon any other
                  representations, warranties or inducements whatsoever as an
                  inducement to enter into this Agreement, other than those
                  references herein and acknowledge that no representations,
                  warranties or covenants have been made which are not
                  referenced in this Agreement.

            13.4  The failure to enforce at any time any of the provisions of
                  this Agreement or the failure to require at any time
                  performance of any of the provisions of this Agreement shall
                  in no way be construed to be a waiver of such provisions or to
                  affect either the

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                  validity of this Agreement or any part hereof, or the right
                  thereafter to enforce each and every such provision in
                  accordance with the terms of this Agreement.

            13.5  This Agreement may be executed in one or more counterparts,
                  each of which shall be deemed to be an original but all of
                  which together shall constitute one and the same document.

            13.6  This Agreement constitutes the entire understanding of the
                  parties with respect to the subject matters hereof and
                  replaces and supersedes any and all prior agreements, oral and
                  written, between the parties hereto with respect to the
                  subject matter hereof, except that the agreements referenced
                  herein shall continue in full force and effect other than as
                  they are specifically modified herein, and may not be changed,
                  modified, altered, or amended, nor any of its provisions
                  waived, except in a writing signed by the parties hereto.

In witness whereof, the parties hereto hereby execute this Transition Services
Agreement as of the date first written above.

The BISYS Group, Inc.

By: /s/ Kevin J. Dell
    -----------------
    Kevin J. Dell
    Executive Vice President
    General Counsel and Secretary

    /s/ Lynn J. Mangum
    ------------------
    Lynn J. Mangum

Approved by the Board of Directors pursuant to authority duly granted by the
signatures of the following Directors:

    /s/ John J. Lyons
    -----------------
    John J. Lyons
    Chairman, Compensation Committee of the Board of Directors

    /s/ Denis A. Bovin
    ------------------
    Denis A. Bovin
    Chairman, Nominating and Governance Committee of the Board of Directors

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