Plant to Plant Stock Transfer issue in Cost estimate

Hello CO Experts:

I am testing a scenario , i have two plants , plant A is manufacturing and plant B is selling plant. For Product 10010 i have a released cost estimate in Plant A , i extended this material to Plant B and assigned Procurement type F and Spl Proc Key 40 and executed its cost estimate in Plant B, upon execution system is giving an error to give consumption account for this finished material valuation class in GBB VBR. Can someone please shed light on why system is asking for FERT consumption account in this particular scenario.

Thanks