Build an AI-assisted invoice approval workflow with Power Automate and AI Builder

An invoice arriving by email starts a series of checks. Someone has to read the document, find the purchase order, compare the amount, and make sure the invoice has not already been processed.

In this tutorial, I use AI Builder to extract fields from PDF invoices and Power Automate to check them against SharePoint records. Valid, unique invoices go to a person for review. The flow records the decision, while mismatches and missing information follow an exception path.

The lab uses synthetic invoices to test approval, rejection, a total mismatch, a missing purchase order, and a duplicate invoice. It stops at the approval record. It does not post to an accounting system or make a payment.

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Build an AI-assisted invoice approval workflow with Power Automate and AI Builder