To authorize the biller mandate, the client has to register a Unique Reference No (URN) on his/her net banking account. The URN is generated by the system and sent to the client via email. You can see the URN by going to Client Panel -> Mandates -> BSE Mandate Id
Step by step procedure to authorize the mandate will also be sent to the client via email.
To track the status of the mandate, check the section “How to Track Mandate Status”
For your reference, please find the instructions for the various banks attached below.