Hi Apu Das,
Go to moni and check the Pipeline steps and see, where it got failed.
Go to ID --> Tools --> Test configuration and provide the necessary details and see, what went wrong.
you can also send a test message from RWB.
go to RWB --> Send test message option --> integration engine
Copy the payload from message mapping and provide the sender interface / communication component details and send it.
Check in moni, it is successfully processed or not.
Regards
Bhargava krishna