Payment controls and records
One remittance is meant to pay several invoices
Allocate only what the buyer's remittance actually states. List the open invoices for that buyer alone, apply the received amount to the invoice references the buyer named, and record anything left over as unidentified until the buyer explains it. An amount that happens to equal an open balance is supporting arithmetic, not proof of intent, and you may not spread one buyer's payment across unrelated buying entities. In QuickBooks, recording a received payment is a separate act from issuing the invoice, and the payment record carries the customer, invoice, amount and an optional reference — that record is where the allocation should live so it can be traced later.
For: A finance contact or authorized representative of a research-only merchant who received one remittance that the buyer says covers several invoices.
Updated 2026-10-01