The activities associated with reconciling purchase orders, receipts and supplier invoices and approving supplier invoice payment. Reconciliation typically includes verifying delivered volumes, price, application of penalties or discounts and where applicable verification of grade or quality. ForS1andSource-to-Ordercontracts the verification typically is a standardized, repeatable process.S3may require more extensive verification. Discrepancies should be resolved before theApprove Paymentprocess is considered completed.