c. 1400, requisicioun, "a request, an act of requesting or demanding," from Old French requisicion (12c.) and directly from Medieval Latin requisitionem (nominative requisitio) "examination, a searching," noun of action from past-participle stem of Latin requirere (past participle requisitus) "seek to know, ask, ask for" (see require).
The meaning "action of formally calling upon someone to perform some action, etc." is by 1550s, originally legal. The sense of "action of requiring a certain amount of something to be furnished" is by 1776.
"demand or require (something) to be furnished" for military or public purposes, 1837, from requisition (n.). Related: Requisitioned; requisitioning.