Agree which source controls each field
Start with a field map. For the delivery address, scope, quantity, acceptance criteria, requested date, approved date, and special conditions, identify the authoritative source and the reviewer responsible for resolving a conflict.
Different fields may have different sources. A customer master may control the billing identifier, while an approved order revision controls quantity. An email can be evidence of a requested change without being authority to apply it.
Keep requested and approved values separate. If a buyer asks for Friday delivery and operations approves Monday, storing only one date loses the history needed for a later conversation. The handoff should show the accepted date and make the unresolved request visible until it is answered.
The extraction layer can suggest structured values from documents. Each suggestion should include the source document, version, and relevant passage. A value with no source belongs in an exception queue.