How can requisition/PO indicate to AP that it is okay to allocate freight?

Hi all,

I'm looking for some advice on what others are doing around freight costs on AP invoices.

Our payables department does not want to pay freight on an invoice unless they have indication on the PO that it is okay to pay freight.  So their workaround is to have the requisitioner add a $1 line item for freight.  They match to this line and change the price to match what is on the invoice, usually instead of using the freight allocation feature.

This creates problems for both expense and inventory requisitions because the paid amount is different from the PO amount, and the requisitioner cannot change the freight price once it has been matched.  The difficulties are increased for inventory requisitions because several freight "items" are being received and need to be expensed at a different amount.