How can I update/change my GST number?
To update the GST number for your MSG91 account-
1. Login to your MSG91 Dashboard and select the Settings option by clicking on the gear icon beside your account name.

OR
Click on the username at the bottom left corner and open Settings from the drop-down menu.

2. Now under Settings, you can edit or enter your GST number, select the State and click on Update Details.

The GST number will be updated.