SAP PO 7.31 call BAPI without Z-BAPI and without PI Adapter

Hi guys,

is there a easy way to call within an bpm process (SAP PO 7.31 Java Stack Only) a BAPI on ABAP Backend system without using

the workarounds:

-Z-BAPI(Include the BAPI call and the BAPI commit) or

-PI IFlow RFC Adapter with Flag Commit.

In my opinion there should be a easier way, because i do not want to create for each BAPI a corresponding Z-BAPI

and also the way with the iflow is not elegant.

best regards

Michael