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                                                                    EXHIBIT 23.3


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the incorporation by reference in the Registration Statement
(Form S-3) of i2 Technologies, Inc. of our report dated January 26, 1998,
except with respect to paragraph 3 of Note 4, as to which the date is August
14, 1998 and paragraph 4 of Note 4, as to which the date is March 10, 2000,
with respect to the consolidated financial statements of Aspect Development,
Inc. included in its Annual Report (Form 10-K) for the year ended December 31,
1999, filed with the Securities and Exchange Commission.

                                        /s/ ERNST & YOUNG LLP

Palo Alto, California
October 31, 2000