01Prepare the document set
Collect the controlling PO, accepted amendments, supplier acknowledgment, receiving report, inspection disposition, invoice and linked credits. Record document numbers, revisions and dates. If one invoice covers several orders or deliveries, split the working view by referenced line instead of forcing a shipment total onto the first available PO.
02Validate invoice identity
Check unique invoice number, issue date, seller legal identity, invoice issuer, currency, beneficiary, buyer, ship-to and referenced order. Search prior invoices and credits for duplicates, near-duplicates and resubmissions. Verify changed payment instructions through a known independent channel; matching product quantities cannot make an unverified beneficiary safe.
03Normalize line identity and units
Map buyer SKU, supplier model, revision, variant, PO line, invoice line and receipt line. Record ordered unit, received unit and billed unit plus any approved conversion. Separate selling units, inner packs and cases. Do not compare 10 cartons with 10 pieces or let a vague product description bridge two different variants.
04Match accepted quantity
Calculate ordered, canceled, advised, received, accepted, held, rejected, returned, previously invoiced and currently billable quantities. Use acceptance evidence, not only carrier delivery. Partial receipts need cumulative control so the second invoice does not bill the first receipt again and remaining open quantity stays visible.
05Match price and charges
Compare unit price, currency, discount, tooling, sample, packaging, freight and other agreed charges to the approved order. Recalculate extensions and total. Review tax, duty and accounting treatment with qualified staff. A correct grand total does not excuse a wrong unit price or an unapproved charge hidden elsewhere.
06Classify and route exceptions
Use defined codes for missing PO, missing receipt, quantity, price, unit, identity, duplicate, arithmetic, tax, freight or beneficiary variance. State disputed amount and unaffected amount. Route to purchasing, receiving, quality, finance or supplier owners with evidence and due date; never resolve a control exception through undocumented chat approval.
07Approve, pay and prevent reuse
Record match result, tolerance used, exceptions closed, payment amount, approver and payment reference. Separate invoice entry, receiving, purchasing approval and payment release according to company controls. Mark invoice and order lines as paid or partly paid, link credits, and retain the frozen packet so a resent invoice cannot pass as new.