Order Ops

Three-Way Match

A three-way match is an accounts-payable control that compares three documents before an invoice is paid: the purchase order, the receiving record, and the supplier invoice. The quantities, prices, and terms must agree across all three. If they match, payment is approved. If they do not, the invoice is held for review.

How the three-way match works

The purchase order says what was ordered and at what price. The receiving record, often a packing slip or the EDI 856, says what physically arrived. The invoice, sent as an EDI 810, says what the supplier is billing. Matching the three catches over-billing, short shipments, and price discrepancies before any money leaves.

Why it matters for order accuracy

In distribution, a mismatch usually points to a keying error or a substitution. Reconciling the three documents by hand is slow, so most lines get rubber-stamped and the real exceptions slip through. Matching against structured order data flips that: clean lines clear automatically and only genuine discrepancies surface for a human to review.

Related Terms

Purchase Order (PO)

A purchase order (PO) is a buyer's official offer to purchase goods, listing items, quantities, prices, delivery dates, and ship-to location. It becomes a binding contract once the seller accepts it. In EDI it is the 850 transaction, the document that starts most B2B order flows.

Retail Chargeback

A retail chargeback is a financial deduction a retailer takes from a supplier's payment for failing to meet a compliance rule, such as a late shipment, a missing or wrong ASN, a bad label, or an inaccurate invoice. Chargebacks erode margin and are usually preventable with accurate, on-time EDI.

EDI (Electronic Data Interchange)

EDI (Electronic Data Interchange) is the computer-to-computer exchange of business documents like purchase orders and invoices in a standard electronic format. It replaces paper, fax, and email so two trading partners' systems can transact directly, without anyone re-keying the data.

Learn More

EDI 810 Invoice Guide EDI 850 Purchase Order Guide EDI Document Types Reference Order Processing Automation

Frequently Asked Questions

The purchase order, the receiving report or packing slip, and the supplier invoice. All three must agree on quantity, price, and terms before payment is released.

A two-way match compares only the purchase order and the invoice. A three-way match adds the receiving record, so it also confirms that what was billed was actually delivered.

Sources: ASC X12 standards body

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