Reducing the Purchase Requisition Commitment

The purchase requisition commitment is reduced in proportion to quantity, using purchase orders that reference this purchase requisition.
You can reduce the purchase requisition commitment completely (to zero) using a purchase order with the full quantity or by changing the purchase requisition commitment (quantity of the purchase requisition = quantity of the purchase order).

You generate a purchase requisition for five personal computers, priced at $1500 each. This leads to a purchase requisition commitment of $7500. The purchasing department orders 3 computers at $2000 each. The purchase requisition commitment is reduced in proportion to quantity from $4500 (3 x $1500) to $3000. A purchase order commitment of $6000 (3 x $2000) is created at the same time.