Building a purchase-to-pay trail that survives sample testing
· Clara Hargreaves
A purchase-to-pay trail is only as strong as its weakest link. Auditors and internal reviewers do not need every email in the thread; they need a dated, authorised chain that explains why money left the organisation.
Start with the requisition. It should name the need, the budget holder, and the category. The purchase order should match that need in amount and supplier. Goods or services receipt should confirm what arrived, when, and who checked it. The invoice should three-way match — or have a documented exception. Payment should show who released it and under which dual-control rule.
Trails break most often at receipt: services especially leave only an invoice and a hope that someone remembers the work. A short confirmation email filed against the PO number is often enough. Without it, sample testing becomes a reconstruction exercise months later.
If your team cannot assemble five recent purchases into that chain within an hour, invest in evidence structure before the next audit visit — not during it.