I am trying to use the BAPI_PO_CREATE to create a PO with reference to another PO/item. So far I have not found a way to make this work. I can see that you can do this in ME21, but not sure if the bapi can do this too. We are in 4.6C, so I have to use this bapi instead of BAPI_PO_CREATE1. Any help would be appreciated!