Document:

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                                                                   EXHIBIT 10.21

                                    EXHIBIT A

                            JDA SOFTWARE GROUP, INC.

                       NONSTATUTORY STOCK OPTION AGREEMENT

         The Company has granted to ___________________ (the "OPTIONEE") an
option to purchase certain shares of Stock, upon the terms and conditions set
forth in this Option Agreement and the Notice of Stock Option Grant to which
this Option Agreement is attached as Exhibit A (the "NOTICE").

         1. DEFINITIONS AND CONSTRUCTION.

                  1.1 DEFINITIONS. Unless otherwise defined herein, capitalized
terms shall have the meanings assigned to such terms in the Notice. Whenever
used herein, the following terms shall have their respective meanings set forth
below:

                           (a) "BOARD" means the Board of Directors of the
Company. If one or more Committees have been appointed by the Board to
administer the Plan, "Board" shall also mean such Committee(s).

                            (b) "CODE" means the Internal Revenue Code of 1986,
as amended, and any applicable regulations promulgated thereunder.

                           (c) "COMMITTEE" means the Compensation Committee or
other committee of the Board duly appointed to administer the Plan and having
such powers as shall be specified by the Board. Unless the powers of the
Committee have been specifically limited, the Committee shall have all of the
powers of the Board granted in the Plan, including, without limitation, the
power to amend or terminate the Plan at any time, subject to the terms of the
Plan and any applicable limitations imposed by law.

                            (d) "COMPANY" means JDA Software Group, Inc., a
Delaware corporation, or any successor corporation thereto.

                            (e) "CONSULTANT" means any person, including an
advisor, engaged by a Participating Company to render services other than as an
Employee or a Director.

                            (f) "DIRECTOR" means a member of the Board or of the
board of directors of any other Participating Company.

                            (g) "DISABILITY" means the permanent and total
disability of the Optionee within the meaning of Section 22(e)(3) of the Code.

                            (h) "EMPLOYEE" means any person treated as an
employee (including an officer or a Director who is also treated as an employee)
in the records of a Participating

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Company; provided, however, that neither service as a Director nor payment of a
director's fee shall be sufficient to constitute employment for this purpose.

                            (i) "EXCHANGE ACT" means the Securities Exchange Act
of 1934, as amended.

                            (j) "FAIR MARKET VALUE" means, as of any date, the
value of a share of stock or other property, as determined by the Board, in its
sole discretion, or by the Company, in its sole discretion, if such
determination is expressly allocated to the Company herein.

                            (k) "OPTION EXPIRATION DATE" means the date ten (10)
years after the Date of Option Grant.

                            (l) "PARENT CORPORATION" means any present or future
"parent corporation" of the Company, as defined in Section 424(e) of the Code.

                            (m) "PARTICIPATING COMPANY" means the Company or any
Parent Corporation or Subsidiary Corporation.

                            (n) "PARTICIPATING COMPANY GROUP" means, at any
point in time, all corporations collectively which are then Participating
Companies.

                            (o) "PLAN" means the JDA Software Group, Inc. 1996
Stock Option Plan.

                            (p) "SECURITIES ACT" means the Securities Act of
1933, as amended.

                            (q) "SERVICE" means the Optionee's employment or
service with the Participating Company Group, whether in the capacity of an
Employee, a Director or a Consultant. The Optionee's Service shall not be deemed
to have terminated merely because of a change in the capacity in which the
Optionee renders Service to the Participating Company Group or a change in the
Participating Company for which the Optionee renders such Service, provided that
there is no interruption or termination of the Optionee's Service. The
Optionee's Service shall be deemed to have terminated either upon an actual
termination of Service or upon the corporation for which the Optionee performs
Service ceasing to be a Participating Company. Subject to the foregoing, the
Company, in its sole discretion, shall determine whether the Optionee's Service
has terminated and the effective date of such termination.

                            (r) "SUBSIDIARY CORPORATION" means any present or
future "subsidiary corporation" of the Company, as defined in Section 424(f) of
the Code.

                  1.2 CONSTRUCTION. Captions and titles contained herein are for
convenience only and shall not affect the meaning or interpretation of any
provision of this Option Agreement. Except when otherwise indicated by the
context, the singular shall include the plural, the plural shall include the
singular, and the term "or" shall include the conjunctive as well as the
disjunctive.

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         2. TAX STATUS OF OPTION. This Option is intended to be a nonstatutory
stock option and shall not be treated as an incentive stock option within the
meaning of Section 422(b) of the Code.

         3. ADMINISTRATION. All questions of interpretation concerning this
Option Agreement shall be determined by the Board, including any duly appointed
Committee of the Board. All determinations by the Board shall be final and
binding upon all persons having an interest in the Option. Any officer of a
Participating Company shall have the authority to act on behalf of the Company
with respect to any matter, right, obligation, or election which is the
responsibility of or which is allocated to the Company herein, provided the
officer has apparent authority with respect to such matter, right, obligation,
or election.

         4. EXERCISE OF THE OPTION.

                  4.1 RIGHT TO EXERCISE. Except as otherwise provided herein,
the Option shall be exercisable on and after the Initial Exercise Date and prior
to the termination of the Option (as provided in Section 6) in an amount not to
exceed the Number of Option Shares multiplied by the Vested Ratio less the
number of shares previously acquired upon exercise of the Option. In no event
shall the Option be exercisable for more shares than the Number of Option
Shares.

                  4.2 METHOD OF EXERCISE. Exercise of the Option shall be by
written notice to the Company which must state the election to exercise the
Option, the number of whole shares of Stock for which the Option is being
exercised and such other representations and agreements as to the Optionee's
investment intent with respect to such shares as may be required pursuant to the
provisions of this Option Agreement. The written notice must be signed by the
Optionee and must be delivered in person, by certified or registered mail,
return receipt requested, by confirmed facsimile transmission, or by such other
means as the Company may permit, to the Chief Financial Officer of the Company,
or other authorized representative of the Participating Company Group, prior to
the termination of the Option as set forth in Section 6, accompanied by (i) full
payment of the aggregate Exercise Price for the number of shares of Stock being
purchased and (ii) an executed copy, if required herein, of the then current
forms of escrow and security agreement referenced below. The Option shall be
deemed to be exercised upon receipt by the Company of such written notice, the
aggregate Exercise Price, and, if required by the Company, such executed
agreements.

                  4.3 PAYMENT OF EXERCISE PRICE.

                            (a) FORMS OF CONSIDERATION AUTHORIZED. Except as
otherwise provided below, payment of the aggregate Exercise Price for the number
of shares of Stock for which the Option is being exercised shall be made (i) in
cash, by check, or cash equivalent, (ii) by tender to the Company of whole
shares of Stock owned by the Optionee having a Fair Market Value (as determined
by the Company without regard to any restrictions on transferability applicable
to such stock by reason of federal or state securities laws or agreements with
an underwriter for the Company) not less than the aggregate Exercise Price,
(iii) by means of a Cashless Exercise, as defined in Section 4.3(c), (iv) in the
Company's sole discretion at the time the Option is exercised, by cash for a
portion of the aggregate Exercise Price not less than

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the par value of the shares being acquired and the Optionee's promissory note
for the balance of the aggregate Exercise Price, or (v) by any combination of
the foregoing.

                            (b) TENDER OF STOCK. Notwithstanding the foregoing,
the Option may not be exercised by tender to the Company of shares of Stock to
the extent such tender of Stock would constitute a violation of the provisions
of any law, regulation or agreement restricting the redemption of the Company's
stock. The Option may not be exercised by tender to the Company of shares of
Stock unless such shares either have been owned by the Optionee for more than
six (6) months or were not acquired, directly or indirectly, from the Company.

                            (c) CASHLESS EXERCISE. A "CASHLESS EXERCISE" means
the assignment in a form acceptable to the Company of the proceeds of a sale or
loan with respect to some or all of the shares of Stock acquired upon the
exercise of the Option pursuant to a program or procedure approved by the
Company (including, without limitation, through an exercise complying with the
provisions of Regulation T as promulgated from time to time by the Board of
Governors of the Federal Reserve System). The Company reserves, at any and all
times, the right, in the Company's sole and absolute discretion, to decline to
approve or terminate any such program or procedure.

                            (d) PAYMENT BY PROMISSORY NOTE. No promissory note
shall be permitted if an exercise of the Option using a promissory note would be
a violation of any law. Unless otherwise specified by the Board at the time the
Option is granted, the promissory note permitted in clause (iv) of Section
4.3(a) shall be a full recourse note in a form satisfactory to the Company, with
principal payable four (4) years after the date the Option is exercised.
Interest on the principal balance of the promissory note shall be payable in
annual installments at the minimum interest rate necessary to avoid imputed
interest pursuant to all applicable sections of the Code. Such recourse
promissory note shall be secured by the shares of Stock acquired pursuant to the
then current form of security agreement as approved by the Company. At any time
the Company is subject to the regulations promulgated by the Board of Governors
of the Federal Reserve System or any other governmental entity affecting the
extension of credit in connection with the Company's securities, any promissory
note shall comply with such applicable regulations, and the Optionee shall pay
the unpaid principal and accrued interest, if any, to the extent necessary to
comply with such applicable regulations. Except as the Company in its sole
discretion shall determine, the Optionee shall pay the unpaid principal balance
of the promissory note and any accrued interest thereon upon termination of the
Optionee's Service with the Participating Company Group for any reason, with or
without cause.

                  4.4 TAX WITHHOLDING. At the time the Option is exercised, in
whole or in part, or at any time thereafter as requested by the Company, the
Optionee hereby authorizes withholding from payroll and any other amounts
payable to the Optionee, and otherwise agrees to make adequate provision for
(including by means of a Cashless Exercise to the extent permitted by the
Company), any sums required to satisfy the federal, state, local and foreign tax
withholding obligations of the Participating Company Group, if any, which arise
in connection with the Option, including, without limitation, obligations
arising upon (i) the exercise, in whole or in part, of the Option, (ii) the
transfer, in whole or in part, of any shares acquired upon

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exercise of the Option, (iii) the operation of any law or regulation providing
for the imputation of interest, or (iv) the lapsing of any restriction with
respect to any shares acquired upon exercise of the Option. The Optionee is
cautioned that the Option is not exercisable unless the tax withholding
obligations of the Participating Company Group are satisfied. Accordingly, the
Optionee may not be able to exercise the Option when desired even though the
Option is vested, and the Company shall have no obligation to issue a
certificate for such shares or release such shares from any escrow provided for
herein.

                  4.5 CERTIFICATE REGISTRATION. Except in the event the Exercise
Price is paid by means of a Cashless Exercise, the certificate for the shares as
to which the Option is exercised shall be registered in the name of the
Optionee, or, if applicable, in the names of the heirs of the Optionee.

                  4.6 RESTRICTIONS ON GRANT OF THE OPTION AND ISSUANCE OF
SHARES. The grant of the Option and the issuance of shares of Stock upon
exercise of the Option shall be subject to compliance with all applicable
requirements of federal, state or foreign law with respect to such securities.
The Option may not be exercised if the issuance of shares of Stock upon exercise
would constitute a violation of any applicable federal, state or foreign
securities laws or other law or regulations or the requirements of any stock
exchange or market system upon which the Stock may then be listed. In addition,
the Option may not be exercised unless (i) a registration statement under the
Securities Act shall at the time of exercise of the Option be in effect with
respect to the shares issuable upon exercise of the Option or (ii) in the
opinion of legal counsel to the Company, the shares issuable upon exercise of
the Option may be issued in accordance with the terms of an applicable exemption
from the registration requirements of the Securities Act. THE OPTIONEE IS
CAUTIONED THAT THE OPTION MAY NOT BE EXERCISED UNLESS THE FOREGOING CONDITIONS
ARE SATISFIED. ACCORDINGLY, THE OPTIONEE MAY NOT BE ABLE TO EXERCISE THE OPTION
WHEN DESIRED EVEN THOUGH THE OPTION IS VESTED. Questions concerning this
restriction should be directed to the Chief Financial Officer of the Company.
The inability of the Company to obtain from any regulatory body having
jurisdiction the authority, if any, deemed by the Company's legal counsel to be
necessary to the lawful issuance and sale of any shares subject to the Option
shall relieve the Company of any liability in respect of the failure to issue or
sell such shares as to which such requisite authority shall not have been
obtained. As a condition to the exercise of the Option, the Company may require
the Optionee to satisfy any qualifications that may be necessary or appropriate,
to evidence compliance with any applicable law or regulation and to make any
representation or warranty with respect thereto as may be requested by the
Company.

                  4.7 FRACTIONAL SHARES. The Company shall not be required to
issue fractional shares upon the exercise of the Option.

         5. NONTRANSFERABILITY OF THE OPTION. The Option may be exercised during
the lifetime of the Optionee only by the Optionee or the Optionee's guardian or
legal representative and may not be assigned or transferred in any manner except
by will or by the laws of descent and distribution. Following the death of the
Optionee, the Option, to the extent provided in Section 7, may be exercised by
the Optionee's legal representative or by any person empowered

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to do so under the deceased Optionee's will or under the then applicable laws of
descent and distribution.

         6. TERMINATION OF THE OPTION. The Option shall terminate and may no
longer be exercised on the first to occur of (a) the Option Expiration Date, (b)
the last date for exercising the Option following termination of the Optionee's
Service as described in Section 7, or (c) a Transfer of Control to the extent
provided in Section 8.

         7. EFFECT OF TERMINATION OF SERVICE.

                  7.1 OPTION EXERCISABILITY.

                            (a) DISABILITY. If the Optionee's Service with the
Participating Company Group is terminated because of the Disability of the
Optionee, the Option, to the extent unexercised and exercisable on the date on
which the Optionee's Service terminated, may be exercised by the Optionee (or
the Optionee's guardian or legal representative) at any time prior to the
expiration of twelve (12) months after the date on which the Optionee's Service
terminated, but in any event no later than the Option Expiration Date.

                            (b) DEATH. If the Optionee's Service with the
Participating Company Group is terminated because of the death of the Optionee,
the Option, to the extent unexercised and exercisable on the date on which the
Optionee's Service terminated, may be exercised by the Optionee (or the
Optionee's legal representative or other person who acquired the right to
exercise the Option by reason of the Optionee's death) at any time prior to the
expiration of twelve (12) months after the date on which the Optionee's Service
terminated, but in any event no later than the Option Expiration Date. The
Optionee's Service shall be deemed to have terminated on account of death if the
Optionee dies within one (1) month after the Optionee's termination of Service.

                            (c) OTHER TERMINATION OF SERVICE. If the Optionee's
Service with the Participating Company Group terminates for any reason, except
Disability or death, the Option, to the extent unexercised and exercisable by
the Optionee on the date on which the Optionee's Service terminated, may be
exercised by the Optionee within one (1) month (or such other longer period of
time as determined by the Board, in its sole discretion) after the date on which
the Optionee's Service terminated, but in any event no later than the Option
Expiration Date.

                  7.2 ADDITIONAL LIMITATION ON OPTION EXERCISE. Except as the
Company and the Optionee otherwise agree, exercise of the Option pursuant to
Section 7.1 following termination of the Optionee's Service may not be made by
delivery of a promissory note as provided in Section 4.3(a).

                  7.3 EXTENSION IF EXERCISE PREVENTED BY LAW. Notwithstanding
the foregoing, if the exercise of the Option within the applicable time periods
set forth in Section 7.1 is prevented by the provisions of Section 4.6, the
Option shall remain exercisable until three (3) months after the date the
Optionee is notified by the Company that the Option is exercisable, but in any
event no later than the Option Expiration Date.

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                  7.4 EXTENSION IF OPTIONEE SUBJECT TO SECTION 16(B).
Notwithstanding the foregoing, if a sale within the applicable time periods set
forth in Section 7.1 of shares acquired upon the exercise of the Option would
subject the Optionee to suit under Section 16(b) of the Exchange Act, the Option
shall remain exercisable until the earliest to occur of (i) the tenth (10th) day
following the date on which a sale of such shares by the Optionee would no
longer be subject to such suit, (ii) the one hundred and ninetieth (190th) day
after the Optionee's termination of Service, or (iii) the Option Expiration
Date.

                  7.5 LEAVE OF ABSENCE. For purposes of Section 7.1, the
Optionee's Service with the Participating Company Group shall not be deemed to
terminate if the Optionee takes any military leave, sick leave, or other bona
fide leave of absence approved by the Company of ninety (90) days or less. In
the event of a leave of absence in excess of ninety (90) days, the Optionee's
Service shall be deemed to terminate on the ninety-first (91st) day of such
leave unless the Optionee's right to reemployment with the Participating Company
Group remains guaranteed by statute or contract. Notwithstanding the foregoing,
unless otherwise designated by the Company (or required by law), a leave of
absence shall not be treated as Service for purposes of determining the
Optionee's Vested Ratio.

         8. TRANSFER OF CONTROL.

                  8.1 DEFINITIONS.

                            (a) An "OWNERSHIP CHANGE EVENT" shall be deemed to
have occurred if any of the following occurs with respect to the Company:

                                    (i) the direct or indirect sale or exchange
in a single or series of related transactions by the stockholders of the Company
of more than fifty percent (50%) of the voting stock of the Company;

                                    (ii) a merger or consolidation in which the
Company is a party;

                                    (iii) the sale, exchange, or transfer of all
or substantially all of the assets of the Company; or

                                    (iv) a liquidation or dissolution of the
Company.

                           (b) A "TRANSFER OF CONTROL" shall mean an Ownership
Change Event or a series of related Ownership Change Events (collectively, the
"TRANSACTION") wherein the stockholders of the Company immediately before the
Transaction do not retain immediately after the Transaction, in substantially
the same proportions as their ownership of shares of the Company's voting stock
immediately before the Transaction, direct or indirect beneficial ownership of
more than fifty percent (50%) of the total combined voting power of the
outstanding voting stock of the Company or the corporation or corporations to
which the assets of the Company were transferred (the "TRANSFEREE
CORPORATION(S)"), as the case may be. For purposes of the preceding sentence,
indirect beneficial ownership shall include, without limitation, an interest
resulting from ownership of the voting stock of one or more corporations

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which, as a result of the Transaction, own the Company or the Transferee
Corporation(s), as the case may be, either directly or through one or more
subsidiary corporations. The Board shall have the right to determine whether
multiple sales or exchanges of the voting stock of the Company or multiple
Ownership Change Events are related, and its determination shall be final,
binding and conclusive.

                  8.2 EFFECT OF TRANSFER OF CONTROL ON OPTION. In the event of a
Transfer of Control, any unexercised portion of the Option shall be immediately
exercisable and vested in full as of the date ten (10) days prior to the date of
the Transfer of Control, subject to Section 10 below. Any exercise of the Option
that was permissible solely by reason of this Section 8.2 shall be conditioned
upon the consummation of the Transfer of Control. In addition, the surviving,
continuing, successor, or purchasing corporation or parent corporation thereof,
as the case may be (the "ACQUIRING CORPORATION"), may either assume the
Company's rights and obligations under the Option or substitute for the Option a
substantially equivalent option for the Acquiring Corporation's stock. The
Option shall terminate and cease to be outstanding effective as of the date of
the Transfer of Control to the extent that the Option is neither assumed or
substituted for by the Acquiring Corporation in connection with the Transfer of
Control nor exercised as of the date of the Transfer of Control. Notwithstanding
the foregoing, shares acquired upon exercise of the Option prior to the Transfer
of Control and any consideration received pursuant to the Transfer of Control
with respect to such shares shall continue to be subject to all applicable
provisions of this Option Agreement except as otherwise provided herein.
Furthermore, notwithstanding the foregoing, if the corporation the stock of
which is subject to the Option immediately prior to an Ownership Change Event
described in Section 8.1(a)(i) constituting a Transfer of Control is the
surviving or continuing corporation and immediately after such Ownership Change
Event less than fifty percent (50%) of the total combined voting power of its
voting stock is held by another corporation or by other corporations that are
members of an affiliated group within the meaning of Section 1504(a) of the Code
without regard to the provisions of Section 1504(b) of the Code, the Option
shall not terminate unless the Board otherwise provides in its sole discretion.

         9. ADJUSTMENTS FOR CHANGES IN CAPITAL STRUCTURE. In the event of any
stock dividend, stock split, reverse stock split, recapitalization, combination,
reclassification, or similar change in the capital structure of the Company,
appropriate adjustments shall be made in the number, Exercise Price and class of
shares of stock subject to the Option. If a majority of the shares which are of
the same class as the shares that are subject to the Option are exchanged for,
converted into, or otherwise become (whether or not pursuant to an Ownership
Change Event) shares of another corporation (the "NEW SHARES"), the Board may
unilaterally amend the Option to provide that the Option is exercisable for New
Shares. In the event of any such amendment, the Number of Option Shares and the
Exercise Price shall be adjusted in a fair and equitable manner, as determined
by the Board, in its sole discretion. Notwithstanding the foregoing, any
fractional share resulting from an adjustment pursuant to this Section 9 shall
be rounded down to the nearest whole number, and in no event may the Exercise
Price be decreased to an amount less than the par value, if any, of the stock
subject to the Option.

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         10. SECTION 4999 LIMITATION. This Section 10 shall apply only if the
Optionee, on an after-tax basis, would receive more value under this Option
after the application of this Section than before the application of this
Section. For this purpose, "after-tax basis" shall mean a calculation taking
into account all federal and state income and excise taxes imposed on the
Optionee, including (without limitation) the excise tax described in section
4999 of the Code. If this Section 10 is applicable, it shall supersede any
conflicting provision of this Option Agreement.

         Options shall accelerate pursuant to the provisions of this Option
Agreement, including without limitation those set forth in Section 8 hereof, to
the extent but only to the extent that such acceleration would not subject the
Optionee to the excise tax described in section 4999 of the Code. All
calculations required by this Section 10 shall be made by the independent
auditors retained by the Company most recently prior to the Transfer of Control,
based on information supplied by Company and Optionee, and shall be binding on
the Company and the Optionee. All fees and expenses of such auditors shall be
paid by the Company.

         11. RIGHTS AS A STOCKHOLDER, EMPLOYEE OR CONSULTANT. The Optionee shall
have no rights as a stockholder with respect to any shares covered by the Option
until the date of the issuance of a certificate for the shares for which the
Option has been exercised (as evidenced by the appropriate entry on the books of
the Company or of a duly authorized transfer agent of the Company). No
adjustment shall be made for dividends, distributions or other rights for which
the record date is prior to the date such certificate is issued, except as
provided in Section 9. Nothing in this Option Agreement shall confer upon the
Optionee any right to continue in the Service of a Participating Company or
interfere in any way with any right of the Participating Company Group to
terminate the Optionee's Service as an Employee or Consultant, as the case may
be, at any time.

         12. ESCROW.

                  12.1 ESTABLISHMENT OF ESCROW. To ensure that shares securing
any promissory note will be available for repurchase, the Company may require
the Optionee to deposit the certificate evidencing the shares which the Optionee
purchases upon exercise of the Option with an agent designated by the Company
under the terms and conditions of a security agreement approved by the Company.
If the Company does not require such deposit as a condition of exercise of the
Option, the Company reserves the right at any time to require the Optionee to so
deposit the certificate in escrow. Upon the occurrence of an Ownership Change
Event or a change, as described in Section 9, in the character or amount of any
of the outstanding stock of the corporation the stock of which is subject to the
provisions of this Option Agreement, any and all new, substituted or additional
securities or other property to which the Optionee is entitled by reason of the
Optionee's ownership of shares of Stock acquired upon exercise of the Option
that remain, following such Ownership Change Event or change described in
Section 9, subject to any security interest held by the Company shall be
immediately subject to the escrow to the same extent as such shares of Stock
immediately before such event. The Company shall bear the expenses of the
escrow.

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                  12.2 DELIVERY OF SHARES TO OPTIONEE. As soon as practicable
after full repayment of any promissory note secured by the shares or other
property in escrow, the agent shall deliver to the Optionee the shares and any
other property no longer securing any promissory note.

         13. STOCK DISTRIBUTIONS SUBJECT TO OPTION AGREEMENT. If, from time to
time, there is any stock dividend, stock split or other change, as described in
Section 9, in the character or amount of any of the outstanding stock of the
corporation the stock of which is subject to the provisions of this Option
Agreement, then in such event any and all new, substituted or additional
securities to which the Optionee is entitled by reason of the Optionee's
ownership of the shares acquired upon exercise of the Option shall be
immediately subject to any security interest held by the Company with the same
force and effect as the shares subject to such security interest immediately
before such event.

         14. LEGENDS. The Company may at any time place legends referencing any
applicable federal, state or foreign securities law restrictions on all
certificates representing shares of stock subject to the provisions of this
Option Agreement. The Optionee shall, at the request of the Company, promptly
present to the Company any and all certificates representing shares acquired
pursuant to the Option in the possession of the Optionee in order to carry out
the provisions of this Section.

         15. BINDING EFFECT. Subject to the restrictions on transfer set forth
herein, this Option Agreement shall inure to the benefit of and be binding upon
the parties hereto and their respective heirs, executors, administrators,
successors and assigns. Any successor to the Company (whether direct or indirect
and whether by purchase, lease, merger, consolidation, liquidation or otherwise)
or to all or substantially all of the Company's business and/or assets shall
assume the obligations under this Option Agreement and agree expressly to
perform the obligations under this Option Agreement in the same manner and to
the same extent as the Company would be required to perform such obligations in
the absence of a succession. Failure of the Company to obtain such agreement
shall be a material breach of this Option Agreement.

         16. TERMINATION OR AMENDMENT. The Board may terminate or amend the Plan
or the Option at any time; provided, however, that except as provided in Section
8.2 in connection with a Transfer of Control, no such termination or amendment
may adversely affect the Option or any unexercised portion hereof without the
consent of the Optionee unless such termination or amendment is necessary to
comply with any applicable law or government regulation. No amendment or
addition to this Option Agreement shall be effective unless in writing.

         17. INTEGRATED AGREEMENT. This Option Agreement constitutes the entire
understanding and agreement of the Optionee and the Participating Company Group
with respect to the subject matter contained herein, and there are no
agreements, understandings, restrictions, representations, or warranties among
the Optionee and the Participating Company Group with respect to such subject
matter other than those as set forth or provided for herein. To the extent
contemplated herein, the provisions of this Option Agreement shall survive any
exercise of the Option and shall remain in full force and effect.

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         18. APPLICABLE LAW. This Option Agreement shall be governed by the laws
of the State of Delaware as such laws are applied to agreements between Delaware
residents entered into and to be performed entirely within the State of
Delaware.

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                                                                   EXHIBIT 10.22

            1995 STOCK OPTION PLAN - [PLEASE DELETE BEFORE PRINTING]

                            JDA SOFTWARE GROUP, INC.

                                  AMENDMENT OF

                             STOCK OPTION AGREEMENT

         THIS AMENDMENT OF STOCK OPTION AGREEMENT is made by and between JDA
Software Group, Inc., a Delaware corporation (the "Company"), and
_______________ (the "Optionee").

                                    RECITALS

         WHEREAS, on _________________, the Company granted to the Optionee an
option to purchase __________ shares of the Company's common stock at an
exercise price of $_______ per share (the "Option"), which was evidenced by a
Stock Option Agreement (the "Option Agreement"); and

         WHEREAS, the Company and the Optionee wish to amend the Option to
provide for acceleration of vesting of any unvested shares subject to the Option
upon the occurrence of certain events related to an acquisition of the Company,
pursuant to the terms and conditions set forth below;

                                    AGREEMENT

         NOW, THEREFORE, the Company and the Optionee agree as follows:

         1. Effective Date. This Amendment is effective as of ____________,
1999.

         2. Acceleration Upon Non-Assumption of the Option. In the event of a
Transfer of Control (as defined below), the surviving, continuing, successor, or
purchasing corporation or parent corporation thereof, as the case may be (the
"Acquiring Corporation"), shall either assume the Company's rights and
obligations under the Option or substitute for the Option a substantially
equivalent option for the Acquiring Corporation's stock. In the event that the
Acquiring Corporation fails to assume the Company's rights and obligations under
the Option or substitute for the Option in connection with the Transfer of
Control, and provided that the Optionee's employment with the Company has not
been terminated by the Company for Cause and has not expired prior to such date,
any unexercised portion of the Option shall be immediately exercisable and
vested in full as of the date ten (10) days prior to the date of the Transfer of
Control. An exercise of the Option that was permissible solely by reason of the
acceleration of exercisability provided by this Amendment shall be conditioned
upon the consummation of the Transfer of Control.

                                       1
<PAGE>   2
         3. Termination After Transfer of Control.

                  (a) Acceleration of Vesting. Notwithstanding any provisions of
the Option Agreement to the contrary, in the event of a Termination After
Transfer of Control (as defined below), any unexercised portion of the Option
shall be immediately exercisable and vested in full as of the date of the
Optionee's termination of employment with the Company. Any exercise or vesting
of the Option that was permissible solely by reason of this Amendment shall be
subject to the provisions of Section 4 and 5 below.

                  (b) Post-Termination Exercise. In the event of a Termination
After Transfer of Control, the Option, to the extent unexercised by the Optionee
on the date on which the Optionee's employment terminated, may be exercised by
the Optionee within three (3) months (or six (6) months if the Optionee is
subject to restrictions on transfer to comply with "Pooling-of-Interests"
accounting rules) after the date on which the Optionee's employment terminated,
but in any event no later than the expiration date set forth in the Option
Agreement.

         4. Pooling of Interests Accounting. Notwithstanding anything herein to
the contrary, no acceleration of exercisability or vesting of the Option shall
occur pursuant to this Amendment in the event that (a) the Securities and
Exchange Commission (the "SEC") asserts that such acceleration of exercisability
or vesting precludes the use of "pooling of interests" accounting treatment of
the Transfer of Control, (b) the Transfer of Control is supported by the Board
of Directors of the Company, and (c) the SEC will not reverse its position
following reasonable persuasive efforts by the Company.

         5. Section 4999 Limitation. This Section shall apply only if the
Optionee, on an after-tax basis, would receive more value under the Option after
the application of this Section than before the application of this Section. For
this purpose, "after-tax basis" shall mean a calculation taking into account all
federal and state income and excise taxes imposed on the Optionee, including
(without limitation) the excise tax described in Section 4999 of the Internal
Revenue Code of 1986, as amended (the "Code"). If this Section is applicable, it
shall supersede any conflicting provision of this Amendment or the Option
Agreement.

         The vesting of shares subject to the Option shall accelerate pursuant
to the provisions of this Amendment, but only to the extent that such
acceleration would not subject the Optionee to the excise tax described in
Section 4999 of the Code. All calculations required by this Section shall be
made by the independent auditors retained by the Company most recently prior to
the Transfer of Control, based on information supplied by Company and Optionee,
and shall be binding on the Company and the Optionee. All fees and expenses of
such auditors shall be paid by the Company.

         6. Definitions. For purposes of this Amendment, the following terms
shall have the meanings set forth below:

                                       2
<PAGE>   3
                  (a) "CAUSE" shall occur if the Optionee's employment is
terminated for any of the following reasons:

                           (i) Theft, dishonesty, or intentional falsification
of any employment or Company records;

                           (ii) Improper disclosure of the Company's
confidential or proprietary information; or

                           (iii) The Optionee's conviction (including any plea
of guilty or no contest) for any criminal act that impairs his ability to
perform his duties for the Company.

                  (b) "GOOD REASON" shall mean the occurrence of any of the
following conditions, without the Optionee's written consent, which condition(s)
remain(s) in effect twenty (20) days after written notice to the Company from
Optionee of such condition(s):

                           (i) a failure to pay, or any reduction of the
Optionee's base salary as in effect immediately prior to the Transfer of Control
or the Optionee's bonus compensation in effect prior to the Transfer of Control
(subject to applicable performance requirements with respect to the actual
amount of bonus compensation earned by the Optionee); or

                           (ii) any material breach of this Amendment by the
Company.

                  (c) An "OWNERSHIP CHANGE EVENT" shall be deemed to have
occurred if any of the following occurs with respect to the Company:

                           (i) the direct or indirect sale or exchange in a
single or series of related transactions by the stockholders of the Company of
more than fifty percent (50%) of the voting stock of the Company;

                           (ii) a merger or consolidation in which the Company
is a party;

                           (iii) the sale, exchange, or transfer of all or
substantially all of the assets of the Company; or

                           (iv) a liquidation or dissolution of the Company.

                  (d) "TERMINATION AFTER TRANSFER OF CONTROL" shall mean the
occurrence, within eighteen (18) months following a Transfer of Control, of
either (i) termination of the Optionee's employment by the Company for any
reason other than for Cause, or (ii) the Optionee's resignation for Good Reason.
"Termination After Transfer of Control" shall not include any termination of the
employment of the Optionee (i) by the Company for Cause; (ii) by the Company as
a result of the disability of the Optionee; (iii) as a result of the death of
the Optionee; or (iv) as a result of the voluntary termination of employment by
the Optionee (other than for Good Reason).

                                       3
<PAGE>   4
                  (e) "TRANSFER OF CONTROL" shall mean an Ownership Change Event
or a series of related Ownership Change Events (collectively, the "TRANSACTION")
wherein the stockholders of the Company immediately before the Transaction do
not retain immediately after the Transaction, in substantially the same
proportions as their ownership of shares of the Company's voting stock
immediately before the Transaction, direct or indirect beneficial ownership of
more than fifty percent (50%) of the total combined voting power of the
outstanding voting stock of the Company or the corporation or corporations to
which the assets of the Company were transferred (the "TRANSFEREE
CORPORATION(S)"), as the case may be.

         7. Successors.

                  (a) Company's Successors. Any successor to the Company
(whether direct or indirect and whether by purchase, lease, merger,
consolidation, liquidation or otherwise) or to all or substantially all of the
Company's business and/or assets shall assume the obligations under this
Amendment and agree expressly to perform the obligations under this Amendment in
the same manner and to the same extent as the Company would be required to
perform such obligations in the absence of a succession. Failure of the Company
to obtain such agreement shall be a material breach of this Amendment. For all
purposes under this Amendment, the term "Company" shall include any successor to
the Company's business and/or assets which executes and delivers the assumption
agreement described in this subsection (a) or which becomes bound by the terms
of this Amendment by operation of law.

                  (b) Optionee's Successors. All rights of the Optionee
hereunder shall inure to the benefit of, and be enforceable by, the Optionee's
personal or legal representatives, executors, administrators, successors, heirs,
distributees, devisees and legatees. Optionee shall have no right to assign any
of his obligations or duties under this Amendment to any other person or entity.

         8. Continuation of Other Terms. Except as set forth herein, all other
terms and conditions of the Option Agreement shall remain in full force and
effect.

         9. Applicable Law. This Amendment shall be governed by the laws of the
State of Delaware as such laws are applied to agreements between Delaware
residents entered into and to be performed entirely within the State of
Delaware.

OPTIONEE                                             JDA SOFTWARE GROUP, INC.

_______________________________             By:_________________________________

                                            Title:______________________________

                                       4

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