In the CO certification process, which documentation do receiving/inspection personnel provide to support vouchers?

• A. Vendor invoices.
• B. Purchase orders.
• C. Contract amendments.
• D. Acceptance documentation confirming receipt and condition.

Answer: (D)

The important point is that acceptance documentation confirms that the items were actually received and in acceptable condition, and that proof is what supports the voucher for payment. When receiving and inspection personnel sign off on a delivery, they create an audit trail that ties payment to tangible receipt and quality checks. This documentation—such as receiving reports, delivery receipts, inspection notes, and an acceptance signature—demonstrates to the approving official that the government received the goods as ordered and that any discrepancies or damages have been noted before payment is released.

Vendor invoices, while necessary for payment terms and amounts, do not prove that the goods were received. Purchase orders show authorization for purchase but not actual receipt. Contract amendments adjust terms over time and do not reflect the physical receipt or condition of the goods.