Multifacility planning for procured items

Hi,

 

My business requirement is to have multifacility planning for procured items. We have 4 branch plants A, B, C,

A - Mfg facility.

B - Purchase items storage area (Space constraint in faclity A to store procured items)

C & D - Warehouse.

We maintain sales forecast at C&D branch plant. Branch plant relationship has been setup for C& D to facility A. We run DRP/MPS (R3483) to plan WO or the FG at facility A. The raw materials are stored in facility A & B.

I need to supply RM from A & B for production at facility A. For shortage, I need to raise PO from site A.