MM Account Determination Exits

Question

Greetings to all Experts -
We're trying to fix an issue here with inter-company processing and want account assignment for cost of sales for inter-company orders to flow to a separate cost of sales account than trade sales.  The problem is that we do not use separate order types for inter-company nor do we use separate movement types so using standard account determination configuration, we're not able to separate this out. 
Does anyone know of a standard enhancement or other method by which to accomplis this (i.e. BTE)?

Answer 1

These are two different postings:
BSX: stock posting
GBB: Offsetting entry for stock posting
Stock posting (BSX)
This transaction is used for all postings to stock accounts. Such
postings are effected, for example:
-   In inventory management in the case of goods receipts to own
    stock and goods issues from own stock
-   In invoice verification, if price differences occur in
    connection with incoming invoices for materials valuated at
    moving average price and there is adequate stock coverage
-   In order settlement, if the order is assigned to a material with
    moving average price and the actual costs at the time of
    settlement vary from the actual costs at the time of goods
    receipt
Offsetting entry for stock posting (GBB)
Offsetting entries for stock postings are used in Inventory
Management. They are dependent on the account grouping to which each
movement type is assigned. The following account groupings are
defined in the standard system:
-   VKA:     for sales order account assignment
         (for example, for individual purchase order)