There are two methods in which you can logon to Back Office
Method 1 ) By using your 8 digit login ID and password
Method 2) By using your mobile number or Email ID. If you enter your mobile number then you will receive OTP on the mobile. If you enter you email ID, then you will receive OTP on your Email. The mobile number and OTP login option is also useful for Group Login.
This login type allows you access to all accounts which are linked to the same mobile number or email ID.