Hi, letus say we have ext opr at opr 20. i know that by assigning PP02, it will generate PR which can be converted to PO. How to issue the semi finished (only one opr completed) product to vendor- which t-code? how to receive again semi finished product (only 10, 20 opr completed) frm vender to operation 30 of original prod ordrr? also explain if there is no material issuence (like service order), how to map in sap?