MFA API changes

BILL has removed the ability to add or use a secondary phone number for the BILL v3 API MFA operations.

Add phone for MFA setup

In the POST /v3/mfa/setup API endpoint, BILL has removed the ability to add a secondary phone number for MFA operations. In the API request, primary can be set only as true. In addition, this field is no longer required in the API request.

When you set primary as false in your API request, you will get an HTTP 400 response and an error message.

Generate MFA challenge

In the POST /v3/mfa/challenge API endpoint, BILL has removed the ability to use a secondary phone number for generating an MFA challenge. In the API request, useBackup can be set only as false. In addition, this field is no longer required in the API request.

When you set useBackup as true in your API request, you will get an HTTP 400 response and an error message.