Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                        Date of Report: December 30, 2002
                        (Date of earliest event reported)


             (Exact name of registrant as specified in its charter)

          Delaware                   0-25346                     47-0772104
(State or other jurisdiction       (Commission                (I.R.S. Employer
      of incorporation)            File Number)              Identification No.)

                             224 South 108th Avenue,
                              Omaha, Nebraska 68154
          (Address of principal executive offices, including zip code)

                                 (402) 334-5101
              (Registrant's telephone number, including area code)


Item 5.  Other Events.

     On December 30, 2002, Transaction Systems Architects, Inc. issued a press
release announcing that it has not completed the re-audit of its financial
statements for fiscal 2000 and 2001, that its Form 10-K will not be filed by
December 30, 2002, and that it has requested an extension to continue trading on
the NASDAQ National Market until January 13, 2003. A copy of the press release
is attached as an exhibit to this Form 8-K.

Item 7.  Financial Statements and Exhibits.

       (c)   Exhibits.

    99.1   Press Release dated December 30, 2002.


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                     TRANSACTION SYSTEMS ARCHITECTS, INC.

 Date: December 30, 2002             By:          /s/ Dwight G. Hanson
                                                    Dwight G. Hanson
                                         Chief Financial Officer, Treasurer and
                                                  Senior Vice President

                                  EXHIBIT INDEX

  Number      Description

    99.1      Press Release dated December 30, 2002