Hi TW,
Why I have suggested the Item category at account determination is: In my current client the orders are being booked by distributors and a file will come via Interface. We use the BG job and create the sales orders. based on certain parameters the Item category get changes in sales order.
If you see my post: I requested OP to explain as to how they book the sales orders.
Yes, if theydo all transactions manually then we can't suggest above one, but, have to think alternative solution.
Regards, Sai Krishna.