tl;drPO matching is the process of checking that an invoice's details, price, quantity, item, agree with the corresponding purchase order, and often the goods-receipt record as well, before the invoice is approved for payment.

It's a core control against overpayment and billing errors, and one of the most repetitive checks in accounts payable. Automated PO matching runs the comparison on every invoice rather than a sample, and surfaces only the genuine discrepancies for a person to resolve.

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