Unable to update COO during Receiving (when COO was entered while creating the PO initially)

Hi Team,

The client has a requirement that when the Country of Origin (COO) is entered on the Purchase Order (PO), it should default onto the receiving line, and the receiving agent should have the ability to update or override it if needed. If the COO is left blank on the PO, the receiving agent should be able to enter it during the receiving process.

It appears that the second scenario—entering the COO during receiving when it is left blank on the PO—is working as expected.

However, for the first scenario, while the system does default the COO from the PO to the receiving line, it does not allow the receiving agent to override or update the COO during receiving. I have attached a document detailing the issue and requirements.