Payment exceptions cleared inside the same hour

A payment that does not match its invoice is a small thing that stops a large one. The goods wait, the account goes on hold, and someone in finance opens three systems to work out that the buyer paid two invoices in one transfer and rounded the total.

This scenario follows a mismatched payment from the bank feed to a clean ledger.

Building it

Cnaan watches the incoming payments and tries the obvious explanations first: a combined payment, a short payment against a known credit note, a currency difference inside tolerance, a reference typed into the wrong field.

When one explanation fits the evidence, the allocation is proposed and posted under the finance team's own rules. When none does, the buyer gets a specific question, not a statement, and the answer closes the loop without a second email.

What changes

• Holds are lifted as soon as the money is understood, not at the next reconciliation run.
• Finance reviews decisions with their reasoning, instead of rebuilding them from scratch.
• Buyers are asked one precise question, once.

The ledger ends the day the way an auditor would want to find it, and nobody stayed late to get it there.