Which document verifies that a specified quantity of material has been received against an order?

The Goods Receipt/Acceptance Document is the correct choice because it serves as an official record that confirms the receipt of a specified quantity of materials against an order. This document is pivotal in the procurement process as it provides clear and verifiable evidence that the goods ordered have been delivered accurately and in the expected condition. It typically includes details such as the quantity received, the date of receipt, and the associated purchase order number, facilitating an effective matching process between what was ordered and what was received.

In contrast, the other options do not fulfill the same role. For example, a Purchase Order Confirmation is primarily an acknowledgment from the vendor regarding the order placement and does not indicate receipt of goods. A Delivery Note, while it does accompany the shipment and often lists the goods delivered, does not serve as a formal record that verifies that those goods have been accepted by the receiving party. An Invoice Receipt is related to the financial transaction and payment process rather than the physical receipt of goods, making it irrelevant in the context of verifying the quantity received. Therefore, the Goods Receipt/Acceptance Document is the definitive document used to certify the successful receipt of materials.