Attach invoices, collect vendor forms, request missing proof. Every one is ready to run, and you can adjust it in plain language.
Bring invoice PDFs into the pending bill review queue.
Your reviewers find the invoice PDF on the pending bill. Your payables person sees any match that needs a decision.
Keep revised supplier invoices with bills awaiting finance review.
Your pending bill carries the corrected invoice with its earlier version linked when the match is clear.