Supplier invoices that read, validate and post themselves

Abstract

Accounts-payable teams key invoices in by hand and cross-check them against purchase orders one by one. The design is an agent that extracts the fields, validates them against the PO in SAP, posts the clean ones automatically, and routes only genuine discrepancies to a human. Of everything on this page, it is the easiest to measure.

The problem

Hundreds of supplier invoices arrive every month as PDFs and email attachments. Each one is read, retyped, matched to a PO, and posted — slow, error-prone, and a poor use of skilled finance people. The work scales linearly with the business; the headcount shouldn't have to.

What gets built

• OCR and LLM extraction of date, amount, description and tax ID from any invoice layout.
• Validation against the matching purchase order in SAP.
• Automatic posting for invoices that reconcile cleanly.
• A discrepancy queue that surfaces only the exceptions, with the reason attached.

How it works

• An invoice arrives; the agent extracts its fields regardless of format.
• It matches the invoice to its PO and checks amounts and terms.
• Clean invoices post automatically with a full audit trail.
• Mismatches go to a reviewer with the discrepancy already explained.

Result

The hours your AP team spends keying and matching drop substantially, and posting latency falls — while the exception queue keeps a human in the loop exactly where judgement is needed.