How to change the primary bank account at Jainam?

The primary bank a/c can be changed only through the broker.For example, if the client already has two bank accounts in Jainam.For example, HDFC and ICICI; here ICICI is his primary bank account. Now, if he wants to change his primary bank account from ICICI to HDFC, then this can only be done with the help of Jainam.

RELATED FACTS:
The client can only add the new bank account from his end and make it primary.For example, if the client has mapped 1 bank account (SBI) in Jainam and now wants to add one more account (AXIS), then he can make the AXIS bank account primary by himself while adding this bank account.