Match Purchase Order Lines to B2B Invoices

Create a crosswalk before sending the invoice

Record the buyer’s purchase order and line number alongside your order line, item reference, unit of measure, and price. A single buyer line can be fulfilled in stages or allocated across several invoices. Preserve the parent line even when your system creates a separate internal record for each release.

Separate quantities by stage

• Compare the authorized quantity, shipped quantity, quantity already invoiced, and quantity remaining.
• Keep buyer-approved changes and canceled quantities in the record so the remaining balance is explainable.
• Check whether freight, credits, or other adjustments require a separate buyer reference.

Investigate the unmatched line before resending

When accounts payable rejects a line, request the reason and compare the order, shipping record, and invoice side by side. If the buyer changed a line number or approved a substitution, link the revised buyer record to the original order. Send the corrected record through the buyer’s normal billing channel.