Pay On field at PO Release and Standard PO is disabled while it is populated at site level
We have Supplier Site created first with Pay On = NULL.
Step#1: Then Standard POs and PO Releases (BPA also has Pay On = NULL) were created. Obviously PO will have Pay On = NULL because it will lookup to Supplier Site to default this value.
Step#2: We later updated Supplier Site with Pay On = Receipt.
Step#3: Now we want those Standard POs and PO Releases which were created in Step#1 to reflect Pay On = Receipt.
So, we are trying to update Pay On on those POs and PO Releases but the Pay On field is read-only. How can this field be made editable ?