PO Approval Error "Supplier Site (VALUE=nnnn) is not an Active and Valid Purchasing Supplier Site"
One of our PO users is getting the above error when trying to approve a PO release with INCOMPLETE status.
However, the same user is able to approve without error, a new Release Number under the same PO with same vendor site.
I verified the vendor site cited in the Error and it is active and is a valid purchasing site.
What could be causing this error? Where else I may check to find solution for this error?
Please advise. Thanks.