To transfer funds from your NRE bank account from any bank, the process is offline. Kindly reach out to your respective bank RMs or visit your bank's nearest branch to submit the A2 and declaration forms. (Currently only Axis Bank supports online transfers from NRE accounts via their net banking platforms.)
To transfer funds from your NRO bank account, you will need to submit a 15CACB form along with A2 and declaration forms.