In my scenario, FG material will only be used for one operation for sub-contracting, and down level SFG material will be used to produce in-house production. 1) FG material will be used for material master procurement, procurement type F, and procurement type 30 sub-contracting. 2) FG material will create a prod order, and operation outsourcing will be used in external processing to create a PR, which one is appropriate for the scenario.
You have 2 solutions to resolve it,
Set the Procurement type = X
1) Normally when a material is in-house produced as well as some time due to lack of capacity reasons, it may send to sub-contractor。
2) So in this case we can maintain procurement type X for this particular material.
3) when MRP runs it creates plan order which can be converted in both ways as per the situation. We can convert it to purchase req and then to sub-contracting PO or else we can directly convert planed order to production order.
Create a new material number, one is for production and the other for procurement.