E1: Product allocation : 3 questions about the preference application

Hi,

-> What is the sales order date (transaction, promised , requested date, ..) used during the the preferation allocation (effectivity dates in F40307)?

-> What if we change the customer and / or the relevant date in the sales order. As per our tests, the quantity sold in the preference profile is not substracted for previous value? For instance : 2 ship-to customers A and B linked to the same customer group GROUP. Enter an sales order line for Ship-to customer A, the quantiy sold is updated in the preference : OK. Then, change the Ship-to csutomer from A to B, the quantity sold is updated again, sou doubled (It should be a neutral operation minus/positive calculation for the same customer group)