In our subcontract business process, we have received the raw material / component directly at vendor location. The BOM has been already maintained for our subcontracted (Assembly) material. When we do GR against SCO with subcontract item we have enter component and its batch number since we have maintained batch our materials. We have to block/restrict the GR with error message if the required components are not equivalent to subcontract (Assembly) material as per the ratio which is maintained in BOM master. How we can do this checking while doing GR against our SCO?