Issue in scenario of freight in Po

Hi,

We have 100 items in the PO that has to be procured through a single PO only. the issue is out of these 100 items in the PO, 80 items are having header Freight condition and the remaining 20 are having freight as line item condition.

One PO separately for freight cndition as header and a separate for line items is not required to be created .

all these 100 items have to be in a single PO.

Pl help on this!

regards