Hi,

The standard solution you need to use is the external repair order flow. This will allow you the create a ESO purchase order (PO order code 6), and you can send the part back to the supplier using a customer order when using this functionality.

Its a comprehensive solution (allowing you to absorb service cost to part value/ receive different part than the one sent for servicing ..etc)

You can read more on ...ifsdoc/documentation/gb/WorkProcessing/AboutExternalRepairOrders.htm

Per R&D, "This is considered as the desired functionality and R&D have no plan to change
the relevant behavior in recent future. 
…. So to prevent that a receipt is cancelled when  all stage payments have been approved there should be a check if all stage payments are approved when the system tries to re-open a closed purchase order line as a part of the cancel receipt process. (A purchase order line is automatically re-opened when a receipt is cancelled).
If all stage payments are approved there should be an error message that states something like: “This purchase order line can’t be reopened as all stage payments are approved. Revoke approval for last stage payment before reopening purchase order line”.  Also note that a stage payment
approval of the last stage payment can’t be revoked if there are supplier invoices matched against that stage payment. Consequently any matched supplier invoice matched against the last stage payment must also be manually cancelled before a receipt is returned."

In other words, if the last stage is approved, you need to revoke the approval.  If the last stage has a Supplier Invoice, you need to cancel the Supplier Invoice, revoke the last stage on the PO, reopen the po line and return the part for rework/repair.