Hi Mahesh,
the storage type which is associated with the work center should have the storage type role staging area in work center. Create a bin in this storage type and maintain the bin in WPT used for inbound delivery.
Meaning Goods issue for the components and Goods reciept for the KIT, both will happen in this work center only and as its also staging area, you will be allowed to post GR and GI
Regards,
RK