I want to enhance the datasource 0FI_AP_4 with the field EBELN from table BSIK .
I am trying to do it in the following way please correct me if I am wrong.
1) Go to RSA6 then select the datasource 0fi_ap_4 and select ENHANCE EXTRACT STRUCTURE then give the name of the append structure
then keep the field EBELN in the structure.
to populate the data to the enhacnced field we need to write ABAP logic using CMOD so experts can you please let me know where excatly to write the code and the logic of the code.
Thanking You all.