Sub Type "W" on Purchase Order - JDE 9.1

Hello,

For the reasons of cost savings, a business has a process where they occasionally send certain stock parts (needed for maintenance) to vendors for repair, instead of buying new ones from them. A set of important information in this process resides on a work order and it is recorded outside JDE (Excel). They want to bring it into the system for better tracking, reporting and cost saving analysis. A Sub Type "W" on purchase order is meant for that purpose but it is normally used for non-stock items. My understanding is that using sub type "W" on a PO for stock item (Line