Built In Scrap But Only for Demand and not usage

We currently build scrap into our BOMs with the scrap percent field but I was wondering if there is a way scrap can be built in so procurement can see the demand with scrap to ensure we buy enough material but the actual job will not consume the additional scrap automatically. The scrap would then be reported separately against the job in some manner. Any suggestions on whether there is a way to do this or if there is a better approach?

So you can use only Qty/Parent included scrap qty. But on that way you won’t have planned scrap. Only actual scrap qty is reported.