As per Govt. notification, if your Aadhaar number is not linked to your bank accounts by March 31, 2018, the accounts will be made inoperational and frozen.
To avoid any inconvenience and to ensure the continued operation of your CSB account, you can update your Aadhaar online, by clicking the link above.You will need your CSB account number and access to your Aadhaar linked mobile number (to get the OTP).
If you have not linked your Aadhaar with a mobile number, you will have to visit your nearest CSB branch to link your account.
Click here for the Notice regarding submission of Aadhaar & PAN.