Creating a PO to subcontract supplier (both Sub-contract Item and normal Item)

I am trying to create a PO to a supplier with items one is Sub-contract Item and the other is normal Item.
But If I check at Supply Raw Materials, then the normal item has a problem.
because it is not a subcontract’s item.

1.Is it possible to contain both items(subcontract & normal item) on one PO?

2.In addition, it is redandant job for user to check the supply raw material check box.
Is there anyway to make the check box as a default?

I have this same question. It seems that you cannot have both a Sub-Contracted and “Regular” item on one PO.
This is causing problems by requiring that we make multiple PO’s for could otherwise be one.
Does anyone know how to accomplish this?