> For the complete documentation index, see [llms.txt](https://tfx-guide.gitbook.io/tfx-biz-flow-comprehensive-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tfx-guide.gitbook.io/tfx-biz-flow-comprehensive-guide/quick-start/buy-module-guide/navigating-the-buy-module/3-way-matching-process.md).

# 3-Way Matching Process

Performing 3-Way Matching (Purchase Order, Supplier Invoices, GRNs)

To ensure the completeness of your procurement, our app performs 3-way matching of purchase orders, supplier invoices, and GRNs. Any unmatched procurement will be highlighted when you click the "make payment" button in the supplier invoice menu. The matching is done by using amounts rather than quantity to accommodate a purchase order with multiple items. The GRN precisely computes value from the quantity received and accepted, thus enabling 3-way matching.