Hi Mahmoud
1. What does your business area represent? Geography or line of business?
if it is line of business, use Profit Center.
2. For sales order having Wbs as Account assignment, the BA or PC must come from wbse. It cant happen that Cogs is posted / revenue too, in the wbse but the BA, PC is not derived from it
that only makes me feel that wbse is not having BA in it
3. Activation of BA Fin St in Oby6 has to be a well thought decision. With that BA will become mandatory in all master data like CC, IO, Asset Master etc. You will have to have a cutover plan
4, Also try substitution in 0kel/0kem to substitute PC/BA in sales order, where the sales order is not assigned to wbse
Ajay M