Hi,
Standard Individual Purchase Order process can be mapped to your scenario
1. Create sales order with Item category TAB
2. Upon saving the sales order, a PR will be created in the backend
3. with PR create PO in ME21N, with receiving Plant as Plant From Sales order
4. Create MIGO which will FullFill Sales order
5. Outbound Delivery can be done once MIGO is posted
Item category: TAB
Schedule Line category : CB ( from standard)
hope it is clear
regards,
santosh