Why people look at this
Duplicate payments are the most common error auditors find in payment registers.
How it is worked out
- Town of Paradise: vendor, invoice number and amount all match on two or more lines with different payment numbers.
Data used
What it cannot tell you
Recurring charges sometimes reuse an invoice number, and a reversed and reissued payment looks the same. The register does not show refunds or reversals.
The Open Contracting Partnership's guide to red flags puts it this way: a red flag is not evidence that anything wrong happened. It points at something that may be worth a closer look.
This page and the calculation are generated from one definition, so they cannot drift apart. See the results.