Requisite

google

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late Middle English: from Latin requisitus ‘searched for, deemed necessary’, past participle of requirere (see require).

wiktionary

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From Latin requīsītus, perfect passive participle of requīrō(“I require, seek, ask for”), from which English require.

etymonline

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requisite (adj.)

"needed, necessary, required by circumstances or the nature of things, so needful that it cannot be dispensed with," mid-15c., from Latin requisitus, past participle of requirere "seek to know, ask, ask for" (see require). As a noun, "that which is necessary, something indispensable," from c. 1600. Related: Requisiteness.