Exhibit 3.1

                   THIRD RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                            JDA SOFTWARE GROUP, INC.,
                             a Delaware Corporation

      JDA SOFTWARE GROUP, INC., a corporation organized and existing under and
by virtue of the General Corporation Law of the State of Delaware (the
"Corporation"), hereby certifies as follows:

      ONE: The name of this Corporation is JDA SOFTWARE GROUP, INC.

      TWO: The original Certificate of Incorporation of the Corporation was
filed with the Secretary of State of Delaware on the 14th day of March, 1995.

      THREE: This Third Restated Certificate of Incorporation only restates and
integrates and does not further amend provisions of the Certificate of
Incorporation as heretofore in effect, and there is no discrepancy between those
provisions and the provisions of this Third Restated Certificate of
Incorporation. This Third Restated Certificate of Incorporation has been adopted
by the Board of Directors in the manner and by the vote prescribed by Section
245 of the General Corporation Law of the State of Delaware, and is as follows:

                                   ARTICLE I

      The name of this Corporation is JDA SOFTWARE GROUP, INC. (the
"Corporation").

                                   ARTICLE II

      The address of the registered office of this Corporation in the State of
Delaware is Corporation Trust Center, 1209 Orange Street in the City of
Wilmington, County of New Castle, Delaware 19801. The name of its registered
agent at such address is The Corporation Trust Company.

                                  ARTICLE III

      The nature of the business or purposes to be conducted or promoted is to
engage in any lawful act or activity for which corporations may be organized
under the General Corporation Law of Delaware.

                                   ARTICLE IV

      This Corporation is authorized to issue two classes of stock to be
designated, respectively, the "Preferred Stock" and the "Common Stock." The
total number of shares of capital stock which this Corporation is authorized to
issue is Fifty-Two Million (52,000,000) shares. Fifty Million (50,000,000)
shares shall be common stock, par value $0.01 per share (the



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"Common Stock"), and Two Million (2,000,000) shares shall be Preferred Stock,
par value $1.00 per share (the "Preferred Stock").

      The Preferred Stock may be issued from time to time in one or more series.
The Board of Directors is hereby authorized, within the limitations and
restrictions stated in this Restated Certificate of Incorporation, to fix or
alter the dividend rights, dividend rate, conversion rights, voting rights,
rights and terms of redemption (including sinking fund provisions), the
redemption price or prices, and the liquidation preferences of any wholly
unissued series of Preferred Stock, and the number of shares constituting any
such series and the designation thereof, or any of them, and to increase or
decrease the number of shares of any series subsequent to the issue of shares of
that series but not below the number of shares of such series then outstanding.
In case the number of shares of any series shall be so decreased, the shares
constituting such decrease shall resume the status which they had prior to the
adoption of the resolution originally fixing the number of shares of such
series.

                                    ARTICLE V

      The rights, preferences, privileges, restrictions and other matters
relating to the Common Stock are as follows:

      1. Dividends. If the Board of Directors shall elect to declare dividends
out of funds legally available therefor, such dividends shall be declared in
equal amounts per share on all shares of Common Stock and Series A Preferred
Stock then outstanding (on an as-converted to Common Stock basis), subject to
Article VI.

      2. Liquidation Rights. In the event of any liquidation, dissolution or
winding up of this Corporation, either voluntary or involuntary, and after the
payment of any preferential liquidating distribution, if any, to the holders of
the Preferred Stock as provided in Article VI, any remaining assets shall be
distributed ratably among the holders of this Corporation's Common Stock and
Series A Preferred Stock (on an as-converted to Common Stock basis).

      3. Voting Rights. The holder of each share of Common Stock shall be
entitled to one vote for each such share as determined on the record date for
the vote or consent of stockholders and shall vote together with the holders of
the Preferred Stock upon any items submitted to a vote of stockholders and those
matters required by law to be submitted to a class vote.

                                   ARTICLE VI

      Five Hundred Thousand (500,000) shares of the Preferred Stock are hereby
designated "Series A Preferred Stock" $1.00 par value per share, with the
rights, preferences and privileges specified herein.

      The rights, preferences, privileges, restrictions and other matters
relating to the Series A Preferred Stock are as follows:



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      1.    Dividends and Distributions.

            (A) The dividend rate on the shares of Series A Preferred Stock
shall be for each quarterly dividend (hereinafter referred to as a "quarterly
dividend period"), which quarterly dividend periods shall commence on January 1,
April 1, July 1 and October 1 each year (each such date being referred to herein
as a "Quarterly Dividend Payment Date") (or in the case of original issuance,
from the date of original issuance) and shall end on and include the day next
preceding the first date of the next quarterly dividend period, at a rate per
quarterly dividend period (rounded to the nearest cent) equal to the greater of
(a) $250.00 or (b) subject to the provisions for adjustment hereinafter set
forth, 100 times the aggregate per share amount of all cash dividends, plus 100
times the aggregate per share amount (payable in cash, based upon the fair
market value at the time the non-cash dividend or other distribution is declared
as determined in good faith by the Board of Directors) of all non-cash dividends
or other distributions other than a dividend payable in shares of Common Stock
or a subdivision of the outstanding shares of Common Stock (by reclassification
or otherwise), declared (but not withdrawn) on the Common Stock during the
immediately preceding quarterly dividend period, or, with respect to the first
quarterly dividend period, since the first issuance of any share or fraction of
a share of Series A Preferred Stock. In the event this Company shall at any time
after October 2, 1998 (the "Rights Declaration Date") (i) declare any dividend
on Common Stock payable in shares of Common Stock, (ii) subdivide the
outstanding Common Stock, or (iii) combine the outstanding Common Stock into a
smaller number of shares, then in each such case the amount to which holders of
shares of Series A Preferred Stock were entitled immediately prior to such event
under clause (b) of the preceding sentence shall be adjusted by multiplying such
amount by a fraction the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

            (B) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Preferred Stock from the Quarterly Dividend Payment Date next
preceding the date of issue of such shares of Series A Preferred Stock, unless
the date of issue of such shares is prior to the record date for the first
Quarterly Dividend Payment Date, in which case dividends on such shares shall
begin to accrue from the date of issue of such shares, or unless the date of
issue is a Quarterly Dividend Payment Date or is a date after the record date
for the determination of holders of shares of Series A Preferred Stock entitled
to receive a quarterly dividend and before such Quarterly Dividend Payment Date,
in either of which events such dividends shall begin to accrue and be cumulative
from such Quarterly Dividend Payment Date. Accrued but unpaid dividends shall
not bear interest. Dividends paid on the shares of Series A Preferred Stock in
an amount less than the total amount of such dividends at the time accrued and
payable on such shares shall be allocated pro rata on a share-by-share basis
among all such shares at the time outstanding. The Board of Directors may fix a
record date for the determination of holders of shares of Series A Preferred
Stock entitled to receive payment of a dividend or distribution declared
thereon, which record date shall be no more than 45 days prior to the date fixed
for the payment thereof.


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      2.    Voting Rights. The holders of shares of Series A Preferred Stock
shall have the following voting rights:

            (A) Subject to the provision for adjustment hereinafter set forth,
each share of Series A Preferred Stock shall entitle the holder thereof to 100
votes on all matters submitted to a vote of the stockholders of the Corporation.
In the event the Corporation shall at any time after the Rights Declaration Date
(i) declare any dividend on Common Stock payable in shares of Common Stock, (ii)
subdivide the outstanding Common Stock, or (iii) combine the outstanding Common
Stock into a smaller number of shares, then in each such case the number of
votes per share to which holders of shares of Series A Preferred Stock were
entitled immediately prior to such event shall be adjusted by multiplying such
number by a fraction the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

            (B) Except as otherwise provided herein, in the Certificate of
Incorporation or by law, the holders of shares of Series A Preferred Stock and
the holders of shares of Common Stock shall vote together as one class on all
matters submitted to a vote of stockholders of the Corporation.

            (C) Except as set forth herein, in the Certificate of Incorporation
and in the Bylaws, holders of Series A Preferred Stock shall have no special
voting rights and their consent shall not be required (except to the extent they
are entitled to vote with holders of Common Stock as set forth herein) for
taking any corporate action.

      3.    Reacquired Shares. Any shares of Series A Preferred Stock purchased
or otherwise acquired by the Corporation in any manner whatsoever shall be
retired and canceled promptly after the acquisition thereof. All such shares
shall upon their cancellation become authorized but unissued shares of Preferred
Stock and may be reissued as part of a new series of Preferred Stock to be
created by resolution or resolutions of the Board of Directors, subject to the
conditions and restrictions on issuance set forth herein.

      4.    Liquidation, Dissolution or Winding Up. In the event of any
voluntary or involuntary liquidation, dissolution or winding up of the
Corporation, the holders of the Series A Preferred Stock shall be entitled to
receive the greater of (a) $10,000.00 per share, plus accrued dividends to the
date of distribution, whether or not earned or declared, or (b) an amount per
share, subject to the provision for adjustment hereinafter set forth, equal to
100 times the aggregate amount to be distributed per share to holders of Common
Stock. In the event the Corporation shall at any time after the Rights
Declaration Date (i) declare any dividend on Common Stock payable in shares of
Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the
outstanding Common Stock into a smaller number of shares, then in each such case
the amount to which holders of shares of Series A Preferred Stock were entitled
immediately prior to such event pursuant to clause (b) of the preceding sentence
shall be adjusted by multiplying such amount by a fraction the numerator of
which is the number of shares of Common Stock outstanding immediately after such
event and the denominator of which is the



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number of shares of Common Stock that were outstanding immediately prior to such
event.

      5.    Consolidation, Merger, etc. In case the Corporation shall enter into
any consolidation, merger, combination or other transaction in which the shares
of Common Stock are exchanged for or changed into other stock or securities,
cash and/or any other property, then in any such case the shares of Series A
Preferred Stock shall at the same time be similarly exchanged or changed in an
amount per share (subject to the provision for adjustment hereinafter set forth)
equal to 100 times the aggregate amount of stock, securities, cash and/or any
other property (payable in kind), as the case may be, into which or for which
each share of Common Stock is changed or exchanged. In the event the Corporation
shall at any time after the Rights Declaration Date (i) declare any dividend on
Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding
Common Stock, or (iii) combine the outstanding Common Stock into a smaller
number of shares, then in each such case the amount set forth in the preceding
sentence with respect to the exchange or change of shares of Series A Preferred
Stock shall be adjusted by multiplying such amount by a fraction the numerator
of which is the number of shares of Common Stock outstanding immediately after
such event and the denominator of which is the number of shares of Common Stock
that were outstanding immediately prior to such event.

      6.    No Redemption. The shares of Series A Preferred Stock shall not be
redeemable.

      7.    Fractional Shares. Series A Preferred Stock may be issued in
fractions of a share which shall entitle the holder, in proportion to such
holder's fractional shares, to exercise voting rights, receive dividends,
participate in distributions and have the benefit of all other rights of holders
of Series A Preferred Stock. All payments made with respect to fractional shares
hereunder shall be rounded to the nearest whole cent.

      8.    Certain Restrictions.

            (A) Whenever quarterly dividends or other dividends or distributions
payable on the Series A Preferred Stock as provided in Article VI, Section 1,
are in arrears, thereafter and until all accrued and unpaid dividends and
distributions, whether or not declared, on shares of Series A Preferred Stock
outstanding shall have been paid in full, the Corporation shall not:

                  (i) declare or pay dividends on, make any other distributions
      on, or redeem or purchase or otherwise acquire for consideration any
      shares of stock ranking junior (either as to dividends or upon
      liquidation, dissolution or winding up) to the Series A Preferred Stock;

                  (ii) declare or pay dividends on or make any other
      distributions on any shares of stock ranking on a parity (either as to
      dividends or upon liquidation, dissolution or winding up) with the Series
      A Preferred Stock, except dividends paid ratably on the Series A Preferred
      Stock and all such parity stock on which dividends are payable or in
      arrears in proportion to the total amounts to which the holders of all
      such shares are then entitled;



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                  (iii) redeem or purchase or otherwise acquire for
      consideration shares of any stock ranking on a parity (either as to
      dividends or upon liquidation, dissolution or winding up) with the Series
      A Preferred Stock, provided that the Corporation may at any time redeem,
      purchase or otherwise acquire shares of any such parity stock in exchange
      for shares of any stock of the Corporation ranking junior (either as to
      dividends or upon dissolution, liquidation or winding up) to the Series A
      Preferred Stock; or

                  (iv) purchase or otherwise acquire for consideration any
      shares of Series A Preferred Stock, or any shares of stock ranking on a
      parity with the Series A Preferred Stock, except in accordance with a
      purchase offer made in writing or by publication (as determined by the
      Board of Directors) to all holders of such shares upon such terms as the
      Board of Directors, after consideration of the respective annual dividend
      rates and other relative rights and preferences of the respective series
      and classes shall determine in good faith will result in fair and
      equitable treatment among the respective series or classes.

            (B) The Corporation shall not permit any subsidiary of the
Corporation to purchase or otherwise acquire for consideration any shares of
stock of the Corporation unless the Corporation could, under paragraph (A) of
this Section 8, purchase or otherwise acquire such shares at such time and in
such manner.

      9.    Ranking. The Series A Preferred Stock shall be junior to all other
Series of the Corporation's preferred stock as to the payment of dividends and
the distribution of assets, unless the terms of any series shall provide
otherwise.

      10.   Amendment. The Certificate of Incorporation of the Corporation shall
not be amended in any manner which would materially alter or change the powers,
preferences or special rights of the Series A Preferred Stock so as to affect
them adversely without the affirmative vote of the holders of two-thirds or more
of the outstanding shares of Series A Preferred Stock voting together as a
single class.

                                  ARTICLE VII

      The following provisions are inserted for the management of the business
and the conduct of the affairs of the Corporation, and for further definition,
limitation and regulation of the powers of the Corporation and of its directors
and stockholders:

      1.    The business and affairs of the Corporation shall be managed by or
under the direction of the Board of Directors. In addition to the powers and
authority expressly conferred upon them by statute or by this Certificate of
Incorporation or the Bylaws of the Corporation, the directors are hereby
empowered to exercise all such powers and do all such acts and things as may be
exercised or done by the Corporation.

      2.    The directors of the Corporation need not be elected by written
ballot unless the Bylaws so provide.



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      3.    Any action required or permitted to be taken by the stockholders of
the Corporation must be effected at a duly called annual or special meeting of
stockholders of the Corporation and may not be effected by any consent in
writing by such stockholders.

      4.    Special meetings of stockholders of the Corporation may be called
only (1) by the Board of Directors pursuant to a resolution adopted by at least
one-third of the total number of directors then in office or (2) by the
Corporation's President or Chief Executive Officer.

                                  ARTICLE VIII

      1.    The number of directors shall be set at four (4) and, thereafter,
shall be fixed from time to time exclusively by the Board of Directors pursuant
to a resolution adopted by a majority of the total number of authorized
directors (whether or not there exist any vacancies in previously authorized
directorships at the time any such resolution is presented to the Board for
adoption). The directors shall be divided into three classes with the term of
office of the first class (Class I) to expire at the first annual meeting of the
stockholders following the closing of the first sale of the Corporation's Common
Stock, pursuant to a firmly underwritten registered public offering (the "IPO");
the term of office of the second class (Class II) to expire at the second annual
meeting of stockholders held following the IPO; the term of office of the third
class (Class III) to expire at the third annual meeting of stockholders; and
thereafter for each such term to expire at each third succeeding annual meeting
of stockholders after such election. All directors shall hold office until the
expiration of the term for which elected, and until their respective successors
are elected, except in the case of the death, resignation, or removal of any
director.

      2.    Newly created directorships resulting from any increase in the
authorized number of directors or any vacancies in the Board of Directors
resulting from death, resignation or other cause (other than removal from office
by a vote of the stockholders) may be filled only by a majority vote of the
directors then in office, though less than a quorum, and directors so chosen
shall hold office for a term expiring at the next annual meeting of stockholders
at which the term of office of the class to which they have been elected
expires, and until their respective successors are elected, except in the case
of the death, resignation, or removal of any director. No decrease in the number
of directors constituting the Board of Directors shall shorten the term of any
incumbent director.

      3.    Subject to the rights of the holders of any series of Preferred
Stock then outstanding, any directors, or the entire Board of Directors, may be
removed from office at any time, with or without cause, but only by the
affirmative vote of the holders of at least a majority of the voting power of
all of the then outstanding shares of capital stock of the Corporation entitled
to vote generally in the election of directors, voting together as a single
class. Vacancies in the Board of Directors resulting from such removal may be
filled by a majority of the directors then in office, though less than a quorum.
Directors so chosen shall hold office for a term expiring at the next annual
meeting of stockholders at which the term of office of the class to which they
have been elected expires, and until their respective successors are elected,
except in the case of the death, resignation, or removal of any director.



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                                   ARTICLE IX

      The Board of Directors is expressly empowered to adopt, amend or repeal
Bylaws of the Corporation. Any adoption, amendment or repeal of Bylaws of the
Corporation by the Board of Directors shall require the approval of at least
two-thirds (2/3) of the total number of authorized directors (whether or not
there exist any vacancies in previously authorized directorships at the time any
resolution providing for adoption, amendment or repeal is presented to the
Board). The stockholders shall also have power to adopt, amend or repeal the
Bylaws of the Corporation. Any adoption, amendment or repeal of Bylaws of the
Corporation by the stockholders shall require, in addition to any vote of the
holders of any class or series of stock of the Corporation required by law or by
this Certificate of Incorporation, the affirmative vote of the holders of at
least sixty-six and two-thirds percent (66-2/3%) of the voting power of all of
the then outstanding shares of the capital stock of the Corporation entitled to
vote generally in the election of directors, voting together as a single class.

                                    ARTICLE X

      A director of the Corporation shall not be personally liable to the
Corporation or its stockholders for monetary damages for breach of fiduciary
duty as a director, except for liability (i) for any breach of the director's
duty of loyalty to the Corporation or its stockholders, (ii) for acts or
omissions not in good faith or which involved intentional misconduct or a
knowing violation of law, (iii) under Section 174 of the Delaware General
Corporation Law, or (iv) for any transaction from which the director derived an
improper personal benefit.

      If the Delaware General Corporation Law is hereafter amended to authorize
the further elimination or limitation of the liability of a director, then the
liability of a director of the Corporation shall be eliminated or limited to the
fullest extent permitted by the Delaware General Corporation Law, as so amended.

      Any repeal or modification of the foregoing provisions of this Article X
by the stockholders of the Corporation shall not adversely affect any right or
protection of a director of the Corporation existing at the time of such repeal
or modification.

                                   ARTICLE XI

      The Corporation reserves the right to amend or repeal any provision
contained in this Certificate of Incorporation in the manner prescribed by the
laws of the State of Delaware and all rights conferred upon stockholders are
granted subject to this reservation; provided, however, notwithstanding any
other provision of this Certificate of Incorporation or any provision of law
which might otherwise permit a lesser vote or no vote, but in addition to any
vote of the holders of any class or series of the stock of this Corporation
required by law or by this Certificate of Incorporation, the affirmative vote of
the holders of at least 66-2/3% of the voting power of all of the then
outstanding shares of the capital stock of the Corporation entitled to vote
generally in the election of directors, voting together as a single class, shall
be required to amend or repeal this Article XI, Article VII, Article VIII,
Article IX or Article X.



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      IN WITNESS WHEREOF, JDA SOFTWARE GROUP, INC. has caused this Third
Restated Certificate of Incorporation to be signed by its President and attested
to by its Secretary this 23 day of July, 2002.


                                                JDA SOFTWARE GROUP, INC.



                                                By:  /s/ Hamish N. Brewer
                                                     ---------------------------
                                                     Hamish N. Brewer, President


ATTEST

By:  /s/ Kristen L. Magnuson
     -------------------------------
     Kristen L. Magnuson, Secretary




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