We have a scenario in which stock is kept at depots across various locations. We have depots created in SAP as Plants and when requirement is generated at Depot, system checks the stock at depot and pass the requirements to Manufacturing plant if stock is not sufficient at Depot in the form of a stock transfer PR. Up to this system is working perfectly fine.
Within plant, we have different MRP Areas for material planning. The requirement is that the PR that is generated for STO, should be able to pass the requirement to an MRP Area (after stock check on the same MRP Area) based on storage locations. Here is where, the scenario starts to fail. The system is passing the requirement and checking stock only at plant level.
I have tried using Stock determination rules, but I cannot utilize stock determination group of one plant to another in the system.
One option that came to mind was manually putting the storage location in the planned order, but with that, the stock checking fails.
While converting planned order to production order, the system accesses the right MRP area, although the material balancing / planning is happening at plant level
Please guide on how I can overcome this problem.