UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                                AMENDMENT NO. 3*

                      TRANSACTION SYSTEMS ARCHITECTS, INC.
                                (Name of Issuer)

                                  COMMON STOCK
                         (Title of Class of Securities)

                                    893416107
                                 (CUSIP Number)

                                DECEMBER 31, 2001
             (Date of Event Which Requires Filing of this Statement)

CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE
IS FILED:

                                [X] RULE 13d-1(b)

                                [ ] RULE 13d-1(c)

                                [ ] RULE 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).





CUSIP No. 893416107                13G

 1.  NAME OF REPORTING PERSON (S.S. or I.R.S. Identification No. of Above
     Person)

     Waddell & Reed Investment Management Company  Tax ID No. 48-1106973

 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:

     (a)    [ ]
     (b)    [ ]

 3.  SEC USE ONLY

 4.  CITIZENSHIP OR PLACE OF ORGANIZATION:   Kansas

 NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

     5.  SOLE VOTING POWER               3,776,800  (See Item 4)

     6.  SHARED VOTING POWER             0

     7.  SOLE DISPOSITIVE POWER          3,776,800  (See Item 4)

     8.  SHARED DISPOSITIVE POWER        0

 9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:
         3,776,800  (See Item 4)

10.  CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES:
         [ ]

11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9:  10.7%

12.  TYPE OF PERSON REPORTING:  IA





CUSIP No. 893416107                13G

 1.  NAME OF REPORTING PERSON (S.S. or I.R.S. Identification No. of Above
     Person)

     Waddell & Reed, Inc.  Tax ID No. 43-1235675

 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:

     (a)    [ ]
     (b)    [ ]

 3.  SEC USE ONLY

 4.  CITIZENSHIP OR PLACE OF ORGANIZATION:   Delaware

 NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

     5.  SOLE VOTING POWER               3,776,800  (See Item 4)

     6.  SHARED VOTING POWER             0

     7.  SOLE DISPOSITIVE POWER          3,776,800  (See Item 4)

     8.  SHARED DISPOSITIVE POWER        0

 9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:
         3,776,800  (See Item 4)

10.  CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES:
         [ ]

11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9:  10.7%

12.  TYPE OF PERSON REPORTING:  BD





CUSIP No. 893416107                13G

 1.  NAME OF REPORTING PERSON (S.S. or I.R.S. Identification No. of Above
     Person)

     Waddell & Reed Financial Services, Inc.  Tax ID No. 43-1414157

 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:

     (a)    [ ]
     (b)    [ ]

 3.  SEC USE ONLY

 4.  CITIZENSHIP OR PLACE OF ORGANIZATION:   Missouri

 NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

     5.  SOLE VOTING POWER               3,776,800  (See Item 4)

     6.  SHARED VOTING POWER             0

     7.  SOLE DISPOSITIVE POWER          3,776,800  (See Item 4)

     8.  SHARED DISPOSITIVE POWER        0

9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:
         3,776,800  (See Item 4)

10.  CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES:
         [ ]

11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9:  10.7%

12.  TYPE OF PERSON REPORTING:  HC





CUSIP No. 893416107                13G

 1.  NAME OF REPORTING PERSON (S.S. or I.R.S. Identification No. of Above
     Person)

     Waddell & Reed Financial, Inc.  Tax ID No. 51-0261715

 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:

     (a)    [ ]
     (b)    [ ]

 3.  SEC USE ONLY

 4.  CITIZENSHIP OR PLACE OF ORGANIZATION:   Delaware

 NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

     5.  SOLE VOTING POWER               3,776,800  (See Item 4)

     6.  SHARED VOTING POWER             0

     7.  SOLE DISPOSITIVE POWER          3,776,800  (See Item 4)

     8.  SHARED DISPOSITIVE POWER        0

 9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:
         3,776,800  (See Item 4)

10.  CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES:
         [ ]

11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9:  10.7%

12.  TYPE OF PERSON REPORTING:  HC





ITEM 1(a):    NAME OF ISSUER:  Transaction Systems Architects, Inc.

ITEM 1(b):    ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

              224 South 108th Avenue
              Suite 7
              Omaha, NE 68154

ITEM 2(a):    NAME OF PERSON FILING:

              (i)      Waddell & Reed Financial, Inc.
              (ii)     Waddell & Reed Financial Services, Inc.
              (iii)    Waddell & Reed, Inc.
              (iv)     Waddell & Reed Investment Management Company

ITEM 2(b):    ADDRESS OF PRINCIPAL BUSINESS OFFICE:

              (i)-(iv):      6300 Lamar Avenue
                             Overland Park, KS  66202

ITEM 2(c):    CITIZENSHIP:

              (i), (iii): Delaware
              (ii):  Missouri
              (iv):  Kansas

ITEM 2(d):    TITLE OF CLASS OF SECURITIES:  Common Stock

ITEM 2(e):    CUSIP NUMBER:  893416107

ITEM 3:       The reporting person is:

              (i)    Waddell & Reed Financial, Inc., a parent holding
                     company in accordance with Reg.
                     240.13d-1(b)(1)(ii)(G);
              (ii)   Waddell & Reed Financial Services, Inc., a parent
                     holding company in accordance with Reg.
                     240.13d-1(b)(1)(ii)(G);
              (iii)  Waddell & Reed, Inc., a broker-dealer in accordance
                     with Reg. 240.13d-1(b)(1)(ii)(A); and
              (iv)   Waddell & Reed Investment Management Company, an
                     investment advisor in accordance with Reg.
                     240.13d-1(b)(1)(ii)(E).

ITEM 4:       OWNERSHIP

              The securities reported on herein are beneficially owned by one or
more open-end investment companies or other managed accounts which are advised
or sub-advised by Waddell & Reed Investment Management Company ("WRIMCO"), an
investment advisory subsidiary of Waddell & Reed, Inc. ("WRI"). WRI is a
broker-dealer and underwriting subsidiary of




Waddell & Reed Financial Services, Inc., a parent holding company ("WRFSI"). In
turn, WRFSI is a subsidiary of Waddell & Reed Financial, Inc., a publicly traded
company ("WDR"). The investment advisory contracts grant WRIMCO all investment
and/or voting power over securities owned by such advisory clients. The
investment sub-advisory contracts grant WRIMCO investment power over securities
owned by such sub-advisory clients and, in most cases, voting power. Any
investment restriction of a sub-advisory contract does not restrict investment
discretion or power in a material manner. Therefore, WRIMCO may be deemed the
beneficial owner of the securities covered by this statement under Rule 13d-3 of
the Securities Exchange Act of 1934 (the "1934 Act").

              WRIMCO, WRI, WRFSI and WDR are of the view that they are not
acting as a "group" for purposes of Section 13(d) under the 1934 Act. Indirect
"beneficial ownership" is attributed to the respective parent companies solely
because of the parent companies' control relationship to WRIMCO.

              (a)    Amount beneficially owned:  3,776,800

              (b)    Percent of class:  10.7%

              (c)    Number of shares as to which the person has:

                     (i)    Sole voting power to vote or to direct the vote:

                            WDR:  3,776,800 (indirect)
                            WRFSI:  3,776,800 (indirect)
                            WRI:  3,776,800 (indirect)
                            WRIMCO:  3,776,800 (direct)

                     (ii)   Shared power to vote or to direct the vote:  0

                     (iii)  Sole power to dispose or to direct the disposition
                            of:

                            WDR:  3,776,800 (indirect)
                            WRFSI:  3,776,800 (indirect)
                            WRI:  3,776,800 (indirect)
                            WRIMCO:  3,776,800 (direct)

                     (iv)   Shared power to dispose or to direct the disposition
                            of:  0

ITEM 5:       OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:

              If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial owner of more
than 5 percent of the class of securities, check the following: [ ]




ITEM 6:       OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON:

              The clients of WRIMCO, including investment companies registered
under the Investment Company Act of 1940 and other managed accounts, have the
right to receive dividends from as well as the proceeds from the sale of such
securities.

ITEM 7:       IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
              THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY:

              See Attached Exhibit 2.

ITEM 8:       IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:

              Not Applicable.

ITEM 9:       NOTICE OF DISSOLUTION OF GROUP:

              Not Applicable.




Item 10:      Certification:

              By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are held in the
ordinary course of business and were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.

                                   SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated:   January 7, 2002


                                 
Waddell & Reed Financial, Inc.      Waddell & Reed Financial Services, Inc.

By: /s/ Daniel C. Schulte           By: /s/ Wendy J. Hills

Name:   Daniel C. Schulte           Name:   Wendy J. Hills
Title:  Vice President              Title:  Attorney-In-Fact


Waddell & Reed, Inc.                Waddell & Reed Investment Management Company

By: /s/ Wendy J. Hills              By: /s/ Wendy J. Hills

Name:   Wendy J. Hills              Name:   Wendy J. Hills
Title:  Attorney-In-Fact            Title:  Attorney-In-Fact
EXHIBIT INDEX
Exhibit No. Description 1 Joint Filing Agreement 2 Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company 3 Power of Attorney



                                    EXHIBIT 1

                             JOINT FILING AGREEMENT

     Waddell & Reed Financial, Inc., Waddell & Reed Financial Services, Inc.,
Waddell & Reed, Inc. and Waddell & Reed Investment Management Company (the
"Filing Persons"), hereby agree to file jointly a Schedule 13G and any
amendments thereto relating to the aggregate ownership by each of the Filing
Persons of any voting equity security of a class which is registered pursuant to
Section 12 of the Securities Exchange Act of 1934, as amended, as required by
Rule 13d-1 and Rule 13d-2 promulgated under the Securities Exchange Act of 1934.
Each of the Filing Persons agrees that the information set forth in such
Schedule 13G and any amendments thereto with respect to such Filing Person will
be true, complete and correct as of the date of such Schedule 13G or such
amendment, to the best of such Filing Person's knowledge and belief, after
reasonable inquiry. Each of the Filing Persons makes no representations as to
the accuracy or adequacy of the information set forth in the Schedule 13G or any
amendments thereto with respect to any other Filing Person. Each of the Filing
Persons shall promptly notify the other Filing Persons if any of the information
set forth in the Schedule 13G or any amendments thereto shall become inaccurate
in any material respect or if said person learns of information that would
require an amendment to the Schedule 13G.

     IN WITNESS WHEREOF, the undersigned have set their hands this 7th day of
January 2002.


Waddell & Reed Financial, Inc.      Waddell & Reed Financial Services, Inc.

By: /s/ Daniel C. Schulte           By: /s/ Wendy J. Hills

Name:   Daniel C. Schulte           Name:   Wendy J. Hills
Title:  Vice President              Title:  Attorney-In-Fact


Waddell & Reed, Inc.                Waddell & Reed Investment Management Company

By: /s/ Wendy J. Hills              By: /s/ Wendy J. Hills

Name:   Wendy J. Hills              Name:   Wendy J. Hills
Title:  Attorney-In-Fact            Title:  Attorney-In-Fact





                                    EXHIBIT 2

Waddell & Reed Investment Management Company - Tax ID No. 48-1106973

     Investment Advisor registered under Section 203 of the Investment Advisor's
Act of 1940





                                    EXHIBIT 3

                                POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, THAT:

     The undersigned Waddell & Reed Financial Services, Inc., a corporation
organized and existing under the laws of the State of Delaware, constitutes and
appoints Wendy J. Hills, Mark P. Buyle and Kristen A. Richards and each of them
severally, its true and lawful attorneys-in-fact on behalf of the corporation
and in its place and stead, in any and all capacities, to execute any and all
Schedules 13G or 13D and any amendments thereto relating to ownership of any
voting equity security of a class which is registered pursuant to Section 12 of
the Securities Exchange Act of 1934, as amended, as required by rules and
regulations promulgated under said Securities Exchange Act of 1934, and to file
the same with all documents required in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done and hereby ratifying and
confirming all said attorneys-in-fact and agents or any of them or their
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the corporation has caused this power of attorney to be
executed in its corporate name by its Executive Vice President and its Secretary
corporate seal to be affixed hereto on this 7th day of January, 2002.



                                         Waddell & Reed Financial Services, Inc.


                                         /s/  Henry J. Herrmann

                                         Henry J. Herrmann
                                         Executive Vice President

Attest:  /s/ Daniel C. Schulte

         Daniel C. Schulte
         Secretary





                                POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, THAT:

     The undersigned Waddell & Reed, Inc., a corporation organized and existing
under the laws of the State of Delaware, constitutes and appoints Wendy J.
Hills, Mark P. Buyle and Kristen A. Richards and each of them severally, its
true and lawful attorneys-in-fact on behalf of the corporation and in its place
and stead, in any and all capacities, to execute any and all Schedules 13G or
13D and any amendments thereto relating to ownership of any voting equity
security of a class which is registered pursuant to Section 12 of the Securities
Exchange Act of 1934, as amended, as required by rules and regulations
promulgated under said Securities Exchange Act of 1934, and to file the same
with all documents required in connection therewith, with the Securities and
Exchange Commission, granting unto said attorneys-in-fact and agents, and each
of them, full power and authority to do and perform each and every act and thing
requisite and necessary to be done and hereby ratifying and confirming all said
attorneys-in-fact and agents or any of them or their substitute or substitutes,
may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the corporation has caused this power of attorney to be
executed in its corporate name by its President and its Secretary corporate seal
to be affixed hereto on this 7th day of January, 2002.



                                         Waddell & Reed, Inc.


                                         /s/  Michael D. Strohm

                                         Michael D. Strohm
                                         President

Attest:  /s/ Daniel C. Schulte

         Daniel C. Schulte
         Secretary





                                POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, THAT:

     The undersigned Waddell & Reed Investment Management Company, a corporation
organized and existing under the laws of the State of Kansas, constitutes and
appoints Wendy J. Hills, Mark P. Buyle and Kristen A. Richards and each of them
severally, its true and lawful attorneys-in-fact on behalf of the corporation
and in its place and stead, in any and all capacities, to execute any and all
Schedules 13G or 13D and any amendments thereto relating to ownership of any
voting equity security of a class which is registered pursuant to Section 12 of
the Securities Exchange Act of 1934, as amended, as required by rules and
regulations promulgated under said Securities Exchange Act of 1934, and to file
the same with all documents required in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done and hereby ratifying and
confirming all said attorneys-in-fact and agents or any of them or their
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the corporation has caused this power of attorney to be
executed in its corporate name by its Executive Vice President and its Secretary
corporate seal to be affixed hereto on this 7th day of January, 2002.



                                    Waddell & Reed Investment Management Company


                                    /s/  Henry J. Herrmann

                                    Henry J. Herrmann
                                    President

Attest:  /s/ Daniel C. Schulte

         Daniel C. Schulte
         Secretary