Hi Raja,
For MRP type VB , system will not pass the Dep requirements for VB type malarial during the MRP. If u convert FG planned order to prod order dep requirements will be created for VB type material. Please refer FAQ note on Consumption planning https://service.sap.com/sap/support/notes/550954 Dependent requirements are neither displayed nor considered in the net requirements calculation. Notes 192954 and 37697 contain more information and also modification proposals. If you want to see requirements anyway under VB, SAP has provided a modification in a note. Please check 192954 - Reorder point planning:Displaying/planning reqmnts
Regards,
R.Brahmankar