Internal requisition across operating units : How to handle a drop ship order scenario

Hello Everyone,

I went through a document on how to handle internal requisitions across operating units using internal orders. It is clear and works. However, I have a scenario which is not supported through this process. Below is the scenario.

A warehouse in OU-A has to procure (for restock) few products through OU-B. OU-B doesn't manufacture those products and always places those orders on an external manufacturer. This manufacturer sells products to OU-B only and not to any other company. They ship directly to wherever OU-B ask them to. We did create a warehouse for this facility in OU-B.

OU-B whenever receives a sales order from a customer, that order is executed using drop ship functionality. Orders are either entered directly in OU-B or in OU-A as intercompany orders.