I don't quite understand how a buy-from-business partner is determined by the system in the following case:
An item has 3 equal business partners in "Items - Purchase Business Partner".
If I generate order advice with whina3200m000 (normally we use planning, but I found out that planning uses this logic to generate a purchase order) it seems that the system randomly chooses a supplier.
E.g. I had Sup. A and Sup. B in "Items - Purchase Business Partner".
The generation always ends up with an order advice for Sup. B.
I added Sup. C in "Items - Purchase Business Partner".
The system generated an order advice for Sup. A!!?!!???
Can anyone explain this to me?