Yes,you can change the PO Header section from "Buyer Work Center".
Steps To Reproduce:
1. Create standard Purchase Order in BWC or Update the PO created in PO forms.
2. Save and submit PO for approval - PO is now in Approved status
3. Search for approved PO
4. Update approved PO
5. In the header select Approval Options - Select Yes
6. Delete the existing Supplier (Add new supplier, save and re-submit PO)
Thanks Arif. Unfortunately when I view approved PO in BWC supplier field is read-only so I cannot change it. I can change buyer, bill-to-location etc. but not supplier.
Once the purchase order is approved, you can change the supplier site not supplier only if the PO: Change Supplier Site profile option is set to Yes. If you change the supplier site, the revision will be incremented, and will require reapproval.
Thanks Ananth. So there is no way to change supplier or currency?