smsConfigurationFailure

The reason why the SMS configuration can't send the messages to your users.

This message might include comma-separated values to describe why your SMS configuration can't send messages to user pool end users.

InvalidSmsRoleAccessPolicyException

The Identity and Access Management role that Amazon Cognito uses to send SMS messages isn't properly configured. For more information, see SmsConfigurationType.

SNSSandbox

The Amazon Web Services account is in the SNS SMS Sandbox and messages will only reach verified end users. This parameter won’t get populated with SNSSandbox if the user creating the user pool doesn’t have SNS permissions. To learn how to move your Amazon Web Services account out of the sandbox, see Moving out of the SMS sandbox.