In Subcontracting cycle we don't want to consider the scrap %

Hi,

Please see my problem, I have fixed the scrap % in MRP 4 in material master MM01, Because i want to procure the material include wastage, but At the time of Subcontracting migo that all material are being consumed with 10% of Scrap of wastage, but we don't want to consume the material with wastage, that should be without wastage qty and we put the wastage mannually. how that can be possible Please Give the Solution, Remember that we can't clear the wastage from material master because our client do want want this.

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Thanks in advance

Regard

Anurag