Pass on decisions, carry revision notes, open supplier setup. Every one is ready to run, and you can adjust it in plain language.
Keep emailed invoice PDFs with their matching bills.
Your reviewers find the invoice PDF on the pending bill. Your payables person sees any match that needs a decision.
Attach a corrected supplier invoice to the right client's bill.
Your pending bill carries the corrected invoice with its earlier version linked when the match is clear.