UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549

                                  SCHEDULE 13G

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934*

 SAP AKTIENGESELLSCHAFT SYSTEME, ANWENDUNGEN, PRODUKTE IN DER DATENVERARBEITUNG

                                (Name of Issuer)

                      ORDINARY SHARES WITHOUT NOMINAL VALUE

                         (Title of Class of Securities)

                                   803054204

                                 (CUSIP Number)

                                   MAY 3, 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:

                  |_| Rule 13d-1(b)

                  |_|Rule 13d-1(c)

                  |X| 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 in 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 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).



                                       1


--------- ----------------------------------------------------------------------
1.        NAMES OF REPORTING PERSONS

          I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                   Dr. h. c. Klaus Tschira

--------- ----------------------------------------------------------------------
2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP          (a)   |_|
                                                                    (b)   |_|

--------- ----------------------------------------------------------------------
3.        SEC USE ONLY

--------- ----------------------------------------------------------------------
4.        CITIZENSHIP OR PLACE OF ORGANIZATION

          Federal Republic of Germany

--------- ----------------------------------------------------------------------
                  5.       SOLE VOTING POWER

   NUMBER OF               2,000,000

     SHARES       -------- -----------------------------------------------------
                  6.       SHARED VOTING POWER
  BENEFICIALLY
                           36,987,460*
    OWNED BY
                  -------- -----------------------------------------------------
      EACH        7.       SOLE DISPOSITIVE POWER

    REPORTING              2,000,000

   PERSON WITH    -------- -----------------------------------------------------
                  8.       SHARED DISPOSITIVE POWER

                           36,987,460*

--------- ----------------------------------------------------------------------
9.        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON**

          38,987,460

--------- ----------------------------------------------------------------------
10.       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES

          CERTAIN SHARES                                              |X|


--------- ----------------------------------------------------------------------
11.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          12.3%

--------- ----------------------------------------------------------------------
12.       TYPE OF REPORTING PERSON

          IN

--------- ----------------------------------------------------------------------

     *    Includes  21,154,800  ordinary shares owned by Klaus Tschira  Stiftung
          gemeinnutzige  GmbH and 15,832,660  ordinary  shares owned by Dr. h.c.
          Tschira  Beteiligungs  GmbH & Co. KG. Dr. Tschira exercises voting and
          dispositive power of the ordinary shares held by such entities.

     **   Excludes  1,633,840  ordinary  shares  owned in the  aggregate  by Dr.
          Tschira's immediate family and such shares are not included above.


                                       2



--------- ----------------------------------------------------------------------
1.        NAMES OF REPORTING PERSONS

          I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                   Dr. h.c. Tschira Beteiligungs GmbH & Co. KG

--------- ----------------------------------------------------------------------
2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP         (a)  |_|
                                                                   (b)  |_|

--------- ----------------------------------------------------------------------
3.        SEC USE ONLY

--------- ----------------------------------------------------------------------
4.        CITIZENSHIP OR PLACE OF ORGANIZATION

          Federal Republic of Germany

----------------- -------- -----------------------------------------------------
                  5.       SOLE VOTING POWER
   NUMBER OF
                           15,832,660
    SHARES
                  -------- -----------------------------------------------------
  BENEFICIALLY    6.       SHARED VOTING POWER

    OWNED BY               -0-

      EACH        -------- -----------------------------------------------------
                  7.       SOLE DISPOSITIVE POWER
   REPORTING
                           15,832,660
  PERSON WITH
                  -------- -----------------------------------------------------
                  8.       SHARED DISPOSITIVE POWER

                           -0-
--------- ----------------------------------------------------------------------
9.        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          15,832,660

--------- ----------------------------------------------------------------------
10.       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES

          CERTAIN SHARES                                                 |_|


--------- ----------------------------------------------------------------------
11.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          5.0%

--------- ----------------------------------------------------------------------
12.       TYPE OF REPORTING PERSON

          PN

--------- ----------------------------------------------------------------------


                                       3



--------- ----------------------------------------------------------------------
1.        NAMES OF REPORTING PERSONS

          I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                   Dr. h.c. Tschira Verwaltungs GmbH

--------- ----------------------------------------------------------------------
2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP          (a)   |_|
                                                                    (b)   |_|

--------- ----------------------------------------------------------------------
3.        SEC USE ONLY

--------- ----------------------------------------------------------------------
4.        CITIZENSHIP OR PLACE OF ORGANIZATION

          Federal Republic of Germany

--------- ----------------------------------------------------------------------
                  5.       SOLE VOTING POWER

   NUMBER OF               -0-

    SHARES        -------- -----------------------------------------------------
                  6.       SHARED VOTING POWER
  BENEFICIALLY
                           15,832,660*
    OWNED BY
                  -------- -----------------------------------------------------
     EACH         7.       SOLE DISPOSITIVE POWER

   REPORTING               -0-

  PERSON WITH     -------- -----------------------------------------------------
                  8.       SHARED DISPOSITIVE POWER

                           15,832,660*
--------- ----------------------------------------------------------------------
9.        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          15,832,660

--------- ----------------------------------------------------------------------
10.       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES

          CERTAIN SHARES                                                  |_|


--------- ----------------------------------------------------------------------
11.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          5.0%

--------- ----------------------------------------------------------------------
12.       TYPE OF REPORTING PERSON

          CO

--------- ----------------------------------------------------------------------


     *    Includes   15,832,660  ordinary  shares  owned  by  Dr.  h.c.  Tschira
          Beteiligungs  GmbH  &  Co. KG.   Dr.  h.c.  Tschira  Verwaltungs  GmbH
          exercises voting and dispositive  power of the ordinary shares held by
          such entity.

                                       4



--------- ----------------------------------------------------------------------
1.        NAMES OF REPORTING PERSONS

          I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

                   Klaus Tschira Stiftung gemeinnutzige GmbH

--------- ----------------------------------------------------------------------
2.        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP          (a)   |_|
                                                                    (b)   |_|

--------- ----------------------------------------------------------------------
3.        SEC USE ONLY

--------- ----------------------------------------------------------------------
4.        CITIZENSHIP OR PLACE OF ORGANIZATION

          Federal Republic of Germany

--------- ----------------------------------------------------------------------
                  5.       SOLE VOTING POWER

   NUMBER OF               21,154,800

    SHARES        -------- -----------------------------------------------------
                  6.       SHARED VOTING POWER
  BENEFICIALLY
                           -0-
    OWNED BY
                  -------- -----------------------------------------------------
     EACH         7.       SOLE DISPOSITIVE POWER

   REPORTING               21,154,800

  PERSON WITH     -------- -----------------------------------------------------
                  8.       SHARED DISPOSITIVE POWER

                           -0-
--------- ----------------------------------------------------------------------
9.        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

          21,154,800

--------- ----------------------------------------------------------------------
10.       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES

          CERTAIN SHARES                                                  |_|


--------- ----------------------------------------------------------------------
11.       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

          6.7%

--------- ----------------------------------------------------------------------
12.       TYPE OF REPORTING PERSON

          CO

--------- ----------------------------------------------------------------------


                                       5




ITEM 1(A).        NAME OF ISSUER.

     SAP   Aktiengesellschaft    Systeme,    Anwendungen,    Produkte   in   der
Datenverarbeitung (the "Company").

ITEM 1(B).        ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES.

     The Company's principal executive offices are located at Neurottstrasse 16,
69190 Walldorf, Federal Republic of Germany.

ITEMS 2(A).       NAME OF PERSON FILING.

     This statement is filed on behalf of the following  persons with respect to
ordinary shares of the Company beneficially held by such persons  (collectively,
the "Shares"):

     (i) Dr. h. c. Klaus Tschira,  with respect to Shares  beneficially owned by
him  and  with  respect  to  shares  beneficially  owned  by  Dr.  h.c.  Tschira
Beteiligungs GmbH & Co. KG and Klaus Tschira Stiftung gemeinnutzige GmbH;

     (ii) Dr. h.c.  Tschira  Beteiligungs  GmbH & Co. KG, with respect to Shares
beneficially owned by it;

     (iii)  Dr.  h.c.   Tschira   Verwaltungs   GmbH,  with  respect  to  Shares
beneficially owned by Dr. h.c. Tschira Beteiligungs GmbH & Co. KG; and

     (iv) Klaus  Tschira  Stiftung  gemeinnutzige  GmbH,  with respect to Shares
beneficially owned by it.

     The  foregoing  persons are  hereinafter  referred to  collectively  as the
"Reporting  Persons." Any disclosures  herein with respect to persons other than
the Reporting Persons are made on information and belief after making inquiry to
the appropriate party.

ITEM 2(B).        ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE.

     The  address  of the  principal  business  office of each of the  Reporting
Persons is Villa Bosch,  Schloss-Wolfsbrunnenweg  33, 69118 Heidelberg,  Federal
Republic of Germany.

ITEM 2(C).        CITIZENSHIP.

     (i) Dr.  h. c.  Klaus  Tschira  is a citizen  of the  Federal  Republic  of
Germany.

     (ii) Dr. h.c.  Tschira  Beteiligungs  GmbH & Co. KG is a limited  liability
partnership organized under the laws of the Federal Republic of Germany.

     (iii) Dr. h.c. Tschira Verwaltungs GmbH is a corporation organized under
the laws of the Federal Republic of Germany.

     (iv) Klaus Tschira Stiftung  gemeinnutzige GmbH is a corporation  organized
under the laws of the Federal Republic of GERMANY.

ITEM 2(D).        TITLE OF CLASS OF SECURITIES.

     Ordinary Shares without Nominal Value.


                                       6


ITEM 2(E).       CUSIP NUMBER.

        803054204

ITEM 3.

     If this  statement is filed pursuant to Rules 13d-1(b) or 13d- 2(b) or (c),
check whether the person filing is a:

     (a)         |_| Broker or dealer  registered  under  Section 15 of the Act,


     (b)         |_| Bank as defined in Section 3(a)(6) of the Act,

     (c)         |_| Insurance  Company as defined in Section  3(a)(19) of  the
                     Act,

     (d)         |_| Investment  Company  registered under Section 8 of the
                     Investment Company Act of 1940,

     (e)         |_| Investment  Adviser  in  accordance  with Rule  13d-1(b)(1)
                     (ii)(E),

     (f)         |_| Employee  Benefit Plan or Endowment Fund in accordance
                     with 13d-1 (b)(1)(ii)(F),

     (g)         |_| Parent Holding Company or control person in accordance
                     with Rule 13d-1 (b)(1)(ii)(G),

     (h)         |_| Savings  Association as defined in Section 3(b) of the
                     Federal Deposit Insurance Act,

     (i)         |_| Church Plan that is excluded from the definition of an
                     investment   company   under   Section   3(c)(14)  of  the
                     Investment Company Act of 1940,

     (j)         |_| Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

ITEM 4.          OWNERSHIP.

     The percentages  used herein and in the rest of Item 4 are calculated based
upon 315,958,537  total ordinary shares of the Company issued and outstanding as
of July  27, 2004,  based upon a  representation  of the Company.  As of the
close of business on July 30, 2004:

     A.  DR. H. C. KLAUS TSCHIRA

     (a) Amount beneficially owned: 38,987,460

     (b) Percent of class: 12.3%

     (c) (i)     Sole power to vote or direct the vote: 2,000,000


                                       7



         (ii)    Shared power to vote or direct the vote: 36,987,460

         (iii)   Sole  power  to  dispose  or  direct  the  disposition:
                 2,000,000

         (iv)    Shared  power to  dispose  or  direct  the  disposition:
                 36,987,460

     B.  DR. H.C. TSCHIRA BETEILIGUNGS GmbH & CO. KG

     (a) Amount beneficially owned: 15,832,660

     (b) Percent of class: 5.0%

     (c) (i)     Sole power to vote or direct the vote: 15,832,660

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

         (iii)   Sole  power  to  dispose  or  direct  the  disposition:
                 15,832,660

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

     C.  DR. H.C. TSHIRA VERWALTUNGS GmbH

     (a) Amount beneficially owned: 15,832,660

     (b) Percent of class: 5.0%

     (c) (i)     Sole power to vote or direct the vote: 15,832,660

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

         (iii)   Sole  power  to  dispose  or  direct  the  disposition:
                 15,832,660

         (iv)    Shared power to dispose or direct the disposition: 15,832,660

     D.  KLAUS TSCHIRA STIFTUNG GEMEINNUTZIGE GmbH

     (a) Amount beneficially owned: 21,154,800

     (b) Percent of class: 6.7%

     (c) (i)      Sole power to vote or direct the vote: 21,154,800

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

         (iii)    Sole  power  to  dispose  or  direct  the  disposition:
                  21,154,800

                  (iv) Shared power to dispose or direct the disposition: 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
five percent of the class of securities, check the following. |_|

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

     To the knowledge of the Reporting Persons, no other person has the right to
receive or the power to direct the receipt of  dividends  from,  or the proceeds
from the sale of, the Shares.


                                       8



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

     Not Applicable.

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

     Not Applicable.

ITEM 9.         NOTICE OF DISSOLUTION OF GROUP.

     Not Applicable.

ITEM 10.        CERTIFICATION.

     Not Applicable.





                                       9



                                   SIGNATURES

     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:  July 30, 2004


                                    /s/ Dr. h.c. Klaus Tschira
                                -----------------------------------------------
                                Dr. h. c. Klaus Tschira

                                Klaus Tschira Stiftung gemeinnutzige GmbH


                                By:    /s/ Dr. h.c. Klaus Tschira
                                   --------------------------------------------
                                   Name:  Dr. h.c. Klaus Tschira
                                   Title: Managing Director


                                Dr. h.c. Tschira Beteiligungs GmbH & Co. KG
                                  By:  Dr. h.c. Tschira Verwaltungs GmbH, as
                                       general partner


                                By:    /s/ Dr. h.c. Klaus Tschira
                                   --------------------------------------------
                                   Name:  Dr. h.c. Klaus Tschira
                                   Title: Managing Director





                                       10



                                  EXHIBIT INDEX

EXHIBIT NO.           EXHIBIT DESCRIPTION

99.1                  Joint Filing Agreement






                                       11