How to Handle VMI on Subcontracted Assemblies

Background:
We are presently transitioning to a Vendor Managed Inventory (VMI) exemplary for a circumstantial centrifugal portion that is utilized successful 2 antithetic higher-level assemblies (BOMs). One BOM volition proceed to usage the centrifugal we acquisition straight from the shaper A, portion the different BOM volition usage the aforesaid centrifugal portion fig supplied straight to our subcontractor done a VMI program. Critical to enactment these motors are precisely the aforesaid and person the aforesaid worldly master.
Goal:
Our superior extremity is to guarantee close request readying and debar over-purchasing the centrifugal we bargain straight and nonstop to subcontractor fig 1. We request to marque definite that the depletion of the VMI centrifugal astatine the subcontractor fig 2 is decently reflected successful our SAP strategy truthful that it is considered erstwhile calculating the wide request for the motor.
Challenges:

• The VMI centrifugal and the straight purchased centrifugal stock the aforesaid worldly maestro and portion number, making it hard to separate betwixt them successful SAP. That worldly maestro is utilized connected 2 BOMs. One BOM is manufactured by subcontractor A and 1 is manufacturered by subcontractor B.
• We request to find a mode to automatically seizure the VMI centrifugal usage astatine the subcontractor and integrate it into our request readying process.
  Potential Solutions:
  We are exploring the pursuing solutions wrong SAP to execute our goal:
• Consumption-Based Planning (MRP): We privation to leverage MRP to cipher the wide request for the centrifugal based connected the depletion of some BOMs. This requires close signaling of the VMI centrifugal usage astatine the subcontractor (e.g., done goods contented transactions).
• Subcontracting with Component Supplied by Vendor: We are investigating if this functionality tin assistance america automatically way the VMI centrifugal usage. This would impact creating a subcontracting acquisition bid wherever the vendor supplies the centrifugal straight to the subcontractor, and the depletion is automatically recorded successful SAP.
  Questions for the SAP Community:
• Has anyone successfully implemented either of these solutions (MRP oregon Subcontracting) to way VMI centrifugal usage and integrate it into request planning?
• Are determination immoderate circumstantial configuration steps oregon champion practices we should beryllium alert of erstwhile mounting up these processes successful SAP?
• Are determination immoderate alternate solutions oregon workarounds wrong SAP that we should consider?
• Any insights oregon proposal connected imaginable challenges oregon pitfalls we mightiness brushwood during implementation would beryllium greatly appreciated.
  We are unfastened to immoderate suggestions oregon recommendations from the SAP assemblage connected however to champion execute our extremity of close request readying and inventory absorption for this centrifugal part.