Attach invoices, collect vendor forms, request missing proof. Every one is ready to run, and you can adjust it in plain language.
Pair final agreement files with verified signing evidence.
Keep signed agreements ready for handoff, with signature certificates or audit trails beside them and a clear note when proof is missing.
Keep late project files with the pending document review.
Your reviewer sees missing files on the pending approval item, even when a requester adds them after the review starts.