Field notes
How duplicate invoices hide in growing payable queues
When a firm’s sales book grows faster than its payable desk, the same supplier bill often appears twice — once under the legal entity name printed on the invoice, and again under a shortened trade name someone typed in a hurry.
In our accounts payable accuracy checks, we start with exact invoice-number matches, then widen to amount-and-date pairs against similar vendor strings. The second pass is where growing firms usually find trouble: “ABC Industrial Co., Ltd.” sitting beside “ABC Industrial” with identical totals one day apart.
Why clerks miss the second copy
Open queues reward speed. A clerk clearing a backlog before a payment run rarely has time to search phonetic near-matches. If your vendor master allows free-text creation without a duplicate warning, the second record becomes a permanent trap.
What we ask clients to export
Bring the last ninety days of posted invoices with vendor codes, invoice numbers, amounts, and entry dates. Add the vendor master with creation dates. Those two files are enough to run a first duplicate sweep before anyone opens a paper folder.
If you are preparing for a formal AP accuracy review, clean exports of these fields shorten fieldwork by days.