Infoset query issue

Dear team,

I have a requirement to create an infoset query on the below tables:

DOC information : Table EDIDC  and Table EDIDS 

MM Invoice information : Table RBKP 

FI invoice information :  Table    BKPF

The table RBKP and BKPF however needs to be mapped using a via AWKEY field on BKPF.

The fields of RBKP as BELNR and GJAHR should be concatenated and input in the AWKEY field of the BKPF table to give the desired results.

Please advice how to achieve this?

Thanks ,

Rupali