Re:Subcontracting Senerio in two group companies

Dear Gurus,

My client has a requirement as below :

Plant A & Plant B are plant in different company code. Both the company's are group company.

Plant A is acting as a Subcontractor for Plant B. Plant B is supplying the raw materials & get finish product from Plant A

Now being the subcontractor for Plant A , the raw materials supplied by plant B are non-valuated. Plant A want to track the manufacturing/processing cost. Being a group company client want to have same material code in both the plants.

Also if I am using different material code in plant A (non-valuated material ) , how should I process for Production order creation & also for cost of manufacturing & also sending back finish material to Plant B

Please guide

Ishwar