Follow below mentioned steps:
Account holder to login internet banking www.onlinesbi.com.
Under “e-services” select > Submit form 15G/H option as applicable to you.
Select 15G if you are below 60 years and 15H if above 60 years.
Select the CIF number and click on submit.
This will open a pre-filled form with some of your details, please fill in the missing details.
Click on generate OTP and authenticate by inputting OTP received on your registered mobile number