SECURITIES AND EXCHANGE COMMISSION

                             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 (Date of earliest event reported) August 31, 1998



                          TRANSACTION SYSTEMS ARCHITECTS, INC.
                 (Exact name of registrant as specified in its charter)



         DELAWARE                    0-25346                  47-0772104
(State or other jurisdiction       (Commission              (IRS Employer
     of incorporation)             File Number)           Identification No.)



                  224 South 108th Avenue, Omaha, Nebraska 68154
               (Address of principal executive offices) (Zip Code)

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



                      TRANSACTION SYSTEMS ARCHITECTS, INC.
                                    FORM 8-K


ITEM 9.       SALES OF EQUITY SECURITIES PURSUANT TO REGULATION S.

     On August 31, 1998, Transaction Systems Architects, Inc. (the "Company") 
issued a total of 380,000 shares of its Class A Common Stock in consideration 
for the acquisition of the issued and outstanding securities of Smart Card 
Integrations Limited ("SCIL"), an English corporation which provides smart 
card systems to the finance industry, which is now wholly-owned by the 
Company.  The shares of the Company's stock were issued pursuant to a Share 
Exchange Agreement and Regulation S.  The sellers of SCIL securities were not 
U.S. persons, the sale and issuance occurred in England in an offshore 
transaction, offering restrictions were implemented pursuant to the 
agreement, and the transaction was otherwise in compliance with Regulation S. 
There were no underwriters or other distributors.


SIGNATURES

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.


Dated:  September 14, 1998             By:    /s/ Gregory J. Duman
                                            -------------------------
                                                Gregory J. Duman
                                             Chief Financial Officer
                                           (Principal Financial Officer)