Hi Team, I am part of the team implementing SAP S4 Hana. in our legacy system we had a Sales Part number and then an internal part number. for example the sales team will be selling "ABC" and we will then see that converted to an internal number "123", orders are received as "ABC" and MRP runs and operations all work using "123" During the project our management requires that we keep both part numbers in SAP.. Initially we wanted to set up Material Master with the internal part number "123" as the Material number and then have the sales part number "ABC" in the short description. I am surprised that the consultants are now asking us to set up both parts as materials and then use material determination. I am surprised that organisations using SAP are not using sales part numbers and internal part numbers and have not found a way to have 1 material master with data for sales, OA and operations satisfied? sorry for this difficult question?