Dear Ayan,
a) If you previously want to test this function,
- Goto SE37 :
1) Select from Menu : Function Module -> Execute -> Test Sequences
2) Enter the functions as BAPI_RE_CN_CHANGE and BAPI_TRANSACTION_COMMIT
3) Execute.
b) Finally, If you want to apply this function on the customizing program or enhancement spot ,
you can call the function BAPI_TRANSACTION_COMMIT
Regards,
Jeong, Yeong-Chul.