We create intercompany billing documents (IV) by copying the price from the underlying Stock Transport Orders. Hence, price is maintained in MM contract against the Vendor and Plant. Price is simply copied into the Billing document in SD via copy control of Item category.
We would like to use the standard SAP functionality of 'retro-active billing' (VFRB) by being able to check changes in pricing in MM. This is currently not possible in standard VFRB program (pricing conditions needs to exist in SD).
Is it possible to use an user-exit and make VFRB look at contract prices in MM? Is it doable?
Or, creating a VFRB clone from scratch is the idea to go?