Can we change the bank account number?

No, you cannot change the account number of an existing bank account. A bank account number is a unique permanent identifier assigned by the bank at the time of account opening. If you need a different account number, you must open a new savings or current account with the bank. However, you can update other details linked to your account, such as your mobile number, address, or email ID, by submitting a request at your bank branch or through official net banking portals.