Determine Item Partner with ILN
I'm processing an ORDERS05 idoc and trying to determine a customer partner function at item level using the ILN. I've populated E1EDPA1 with just the partner function and populated sub segment E1EDPA3 with the 001 qualifier and the customers ILN in STDPN. The relevant customer master I'm trying to determine has been updated with the ILN.
However, when I process the idoc, the item partner is not added to the sales order. Am I missing something else or is this not possible at item level. I can use EDPAR to determine the item partner but wanted to remove the need to maintain data in two places.