Your engineering lead sees what changed after sign-off and who needs to review it before merging continues.
Your reviewers see what changed since the last approval and get the revised order for a fresh decision.
See what remains on a purchase order before reviewing a partial supplier bill, with line differences or a clear note when the match needs your help.
See how supplier bill charges compare with the purchase order before you decide what to approve.
See whether a supplier's latest bill fits what's left on the purchase order, with any overage spelled out for AP review.