I run a team that includes people that do this kind of work using ocr software that matches invoices to po's. No AI needed. This is a solved problem. Why are there people involved? Because sometimes the invoice and po don't match. For instance, price on invoice is higher than po, refer to buyer. Buyer is sick, supplier puts you on hold, no parts for your factory, lose millions... Would you trust an AI to choose what to do next? This might get referred to me to resolve and make a decision, not just on the facts available, but on other facts I can discover, and years of experience. I might end up making an unauthorised payment, would you give an AI that power?