Field help (PRHFCYPOD) 

This field is used to specify the site where the goods must be delivered by the supplier. The receiving site comes from the original purchase contract.

Inter-company specificities: when the purchase contract is of inter-site or inter-company type, the receiving site in the purchase contract is initialized with the receiving site entered in the default delivery address for the order customer associated with the purchase site of the purchase contract.
If the default delivery address associated with the customer defined by the purchase site does not specify the receiving site, then the first delivery address is used, in alphabetic order, to identify the receiving site.