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AWS SNS EndpointNotFound

The specified endpoint does not exist.

Understanding AWS SNS

Amazon Simple Notification Service (SNS) is a fully managed messaging service provided by AWS. It enables applications, end-users, and devices to send and receive notifications from the cloud. SNS is commonly used for sending push notifications to mobile devices, emails, and SMS messages. It is a crucial component for applications that require real-time communication and notifications.

Identifying the Symptom: EndpointNotFound

When working with AWS SNS, you might encounter the 'EndpointNotFound' error. This error typically occurs when attempting to send a message to a non-existent endpoint. The symptom is usually an error message indicating that the specified endpoint does not exist.

Exploring the Issue: What is EndpointNotFound?

The 'EndpointNotFound' error is an indication that the endpoint you are trying to access or send a message to is not recognized by AWS SNS. This could be due to an incorrect endpoint identifier or the endpoint being deleted or never created. The error prevents messages from being delivered to the intended recipient.

Common Causes

  • Incorrect endpoint identifier used in the request.
  • The endpoint was deleted or never created.
  • Typographical errors in the endpoint ARN.

Steps to Resolve EndpointNotFound

To resolve the 'EndpointNotFound' error, follow these steps:

Step 1: Verify Endpoint Identifier

Ensure that the endpoint identifier you are using is correct. Double-check the ARN (Amazon Resource Name) of the endpoint. You can list all endpoints for a specific platform application using the AWS CLI:

aws sns list-endpoints-by-platform-application --platform-application-arn

Replace <your-platform-application-arn> with the actual ARN of your platform application.

Step 2: Check Endpoint Existence

Ensure that the endpoint exists and is active. You can use the AWS Management Console to navigate to the SNS section and verify the endpoints under your platform application.

Step 3: Correct Any Typographical Errors

Review the endpoint ARN for any typographical errors. Ensure that the ARN is correctly formatted and matches the expected pattern.

Step 4: Recreate the Endpoint if Necessary

If the endpoint does not exist, you may need to recreate it. Use the AWS CLI to create a new endpoint:

aws sns create-platform-endpoint --platform-application-arn --token

Replace <your-platform-application-arn> with your platform application ARN and <device-token> with the device token.

Additional Resources

For more information on managing endpoints in AWS SNS, refer to the AWS SNS Documentation. You can also explore the AWS SNS Product Page for an overview of features and capabilities.

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