Need to change some of the details on a Purchase Order, but when clicking the Edit link to the PO, no fields are able to be changed.
This is likely becaue the PO has already been converted or partially converted to a vendor invoice.
When a PO is originally created and posted, it can still be edited and changes made to the PO. After conversion to a PO Approval, the PO still remains able to be changed. Note that, once approved, the PO can only be edited for a lesser amount than the original document. It cannot be increased.
When the Purchase Order has been converted or partially converted to a vendor invoice, the ability to edit the PO ceases. Even after partial conversion, the lines that have not been converted still cannot be changed. A new PO will need to be created.