Exhibit 10 (xxvii)

                       AMENDMENT TO EMPLOYMENT AGREEMENT

     WHEREAS, National Data Corporation ("NDC") and Robert A. Yellowlees
("Employee") are parties to an Employment Agreement dated as of June 1, 1997, as
amended, (the "Agreement"); and

     WHEREAS, the parties now desire to further amend certain of the terms of
the Agreement;

     NOW, THEREFORE, in consideration of the foregoing recitals and the mutual
covenants and conditions contained herein, the receipt, adequacy and sufficiency
of which are hereby acknowledged, the parties hereto acknowledge that the
Agreement is hereby amended as follows:

"Section 2. Term
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The employment of Employee hereunder shall continue pursuant to the term of this
Agreement effective as of June 1, 1997, and, unless sooner terminated pursuant
to Section 5 of this Agreement with the consequences of termination set forth in
such Section 5 and unless extended as provided below, shall continue through May
31, 2001. The employment of Employee hereunder may be further extended
thereafter upon the mutual agreement of Employee and the Company to so extend on
or before the date one year prior to the expiration of any such term."

     Except as modified hereby, the terms and conditions of the Agreement shall
remain in full force and effect; provided, however, that if any term or
condition of the Agreement conflicts with or is inconsistent with any term or
condition of this Amendment, such terms and conditions hereof shall prevail and
be controlling.

     IN WITNESS WHEREOF, the parties have caused this Amendment to be executed
by their respective officers duly authorized as of the 31 day of May, 1999.

NATIONAL DATA CORPORATION               EMPLOYEE


By: /s/ Kevin C. Shea                   /s/ Robert A. Yellowlees
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                                        Robert A. Yellowlees

Title: Chief Financial Officer          Title: Chairman & Ceo
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Date:                                   Date: 5/31/99
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