Trying to link Goods Receipt Purchase Order (OPDN) to Landed Cost (OIPF)?

Hi Everyone,

I am wondering what the link is between a Goods Receipt Purchase Order and a Landed Cost. Here is a diagram of the link that I am trying to determine.

According to the Database Tables Reference there is a link between OPDN (Goods Receipt Purchase Order) and OIPF (Landed Costs) called 'ImportEnt', as shown below -

However I can't work out what 'ImportEnt' links to on the OPDN (Goods Receipt Purchase Order) side.

Any advice concerning how to link OPDN to OIPF will be greatly appreciated.

Kind Regards,

David