Go to Banking click on Connect Now on top of the ICICI Accounts box, and link CA by entering ICICI Corporate ID, ICICI User ID, CA No, IFSC Code, Account Holder Name, then clicking on LINK NOW.
Login to ICICI CIB for self-approval under “Connected Banking – Connected Banking Approvals” and add the RM ID. You will receive an OTP on your registered mobile number after entering that you will be able to link your account.