Back to Back Orders with multiple Internal Plant Sourcing.

Hi OM Gurus.

We have a requirement where the Make to Orders are received at the Depot (Stocking Point), however the productions for that items happens in various plants across the countries. The requirement is while placing the Sales Order can the user select the Sourcing Organization (Internal Plant) and then automatically the system should raise the IR / ISO to that Plant.

Currently we are able to achieve this only if I have dedicated plant sourcing that depot, but not able to come up with the idea of how to manage this if there are multiple sourcing plants and what should the user select at the order which can derive the required sourcing plant.