Which Documents Should Be Matched To Make Sure That The Invoice Received Relates To A Valid Order That Was Placed And That The Goods Were Received?

Quick Fix:

Here’s what to match up to confirm the invoice lines up with an actual order and delivery:

• The original Purchase Order (PO)
• The signed Goods Receipt Note (GRN) or Receiving Report
• The supplier’s Invoice
• The internal Payment Voucher

All the key details—supplier name, items, quantities, prices, and delivery date—need to line up exactly before you cut that check.

What’s Happening

When an invoice lands in your inbox, accounts payable has to prove it’s tied to a real purchase that was actually ordered, shipped, and received. It’s not just about trusting the vendor—it’s about stopping overpayments, duplicate checks, or outright fraud. Even with fancy automated ERP systems in 2026, manual cross-checking still reigns supreme for catching errors. According to AccountingTools, mismatches between purchase orders, invoices, and receipts still top the list of payment headaches for small and mid-sized businesses.

Step-by-Step Solution

Step 1: Pull the Purchase Order (PO)

1. Find the PO number on the invoice—it’s usually right up front in the header or tucked into the line items.
2. Open your ERP or accounting software (QuickBooks Desktop 2026, SAP Business One 10.0, NetSuite—whatever you use).
3. Run a search by PO number in the “Purchase Orders” section.
4. Double-check these fields match the invoice:
   • Supplier name and address
   • Item description, SKU, and how many you ordered
   • Unit price and the total dollar amount

Step 2: Confirm Receipt with the Goods Receipt Note (GRN)

1. See if a GRN exists in your system—look under “Inventory,” then “Receiving,” then “Goods Receipts.”
2. If you’re using a warehouse management system (WMS), pull up the receipt record by PO number.
3. Make sure the GRN shows:
   • Exactly the same items and quantities as the PO
   • A “Received” status plus a signature (digital or old-school ink)
   • A date that’s within 30 days of the invoice date (that’s the typical window the U.S. Department of the Treasury likes to see)

Step 3: Match the Invoice

1. Lay the invoice next to the PO and GRN and compare every line.
2. Watch for trouble spots:
   • Unit prices or taxes that don’t match
   • Fees that weren’t in the PO
   • Quantities that exceed what the GRN shows
3. Call the supplier to clear up any mismatches before you approve payment.

Step 4: Approve the Payment Voucher

1. Create or find the payment voucher in your system—look in “Vouchers Payable” (QuickBooks) or “Disbursement Voucher” (SAP).
2. Drop in the PO, GRN, and invoice numbers as supporting docs.
3. Fill in the payment terms (Net 30, for example) and the due date.
4. Send the voucher through the approval chain—usually a quick digital route to the purchasing manager or CFO.
5. Once it’s green-lit, your system spits out a check or kicks off an ACH transfer.