Error with AWS SNS Push Notifications for MFA

After making an accidental deployment to an Amazon Web Services (AWS) configuration, which changed the name of the AWS IAM user used for Push Notification, the following error message started to occur when users attempted to go through the Push Notification flow:

"Guardian - There was an error sending the push notification"

 Additionally, the following error is in the tenant logs:

"Error sending SNS request: Invalid parameter: TargetArn Reason: No endpoint found for the target arn specified"

This article explains whether it is possible to resolve this error.

• Amazon SNS Push Notifications

As the error message suggests, when the credentials were renamed, access was lost to the original ARN; due to this, the resource was not found, and the error was returned. 

The users with Push Notification will have to re-enroll to continue using that factor. Unfortunately, there is no way to update the SNS factor appropriately without the user re-enrolling.