Correct way to process expediting fee on PO?

Hi,

We have users that want to add an expediting fee from a vendor as a separate line on a purchase order, but then we can not perform goods receipt because there is no material associated with the line.

Can anyone help with correct process for this?  We don't want to just add expediting fee to base price of material because it will throw off our material cost.

Thanks for any ideas.

Timothy