Spoilage qty not to be display in Subcontracting PO

Hi Experts,

While making Subcontracting PO to vendor, Qty chaged to 1.02% when BOM got exploded in PO. This 2% spoilage is maintained while creating the BOM Master. Now my client's requirement is such that, this qty shouldn't take that 2% spoilage in PO, without changing 2% in BOM master. How can we do that, if someone has idea, please share.