Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Troubleshoot a Classic Load Balancer: API errors

The following are error messages returned by Elastic Load Balancing API, the potential causes, and the steps you can take to resolve the issues.

CertificateNotFound: Undefined

Cause 1: There is a delay in propagating the certificate to all Regions when it is created using the Amazon Web Services Management Console. When this delay occurs, the error message is shown in the last step in the process of creating the load balancer.

Solution 1: Wait approximately 15 minutes and then try again. If the problem persists, go to the Amazon Web Services Support Center for assistance.

Cause 2: If you are using the Amazon CLI or API directly, you can receive this error if you provide an Amazon Resource Name (ARN) for a certificate that does not exist.

Solution 2: Use the Amazon Identity and Access Management (IAM) action GetServerCertificate to get the certificate ARN and verify that you provided the correct value for the ARN.

OutofService: A transient error occurred

Cause: There is a transient internal problem within the Elastic Load Balancing service or the underlying network. This temporary issue might also occur when Elastic Load Balancing queries the health of the load balancer and its registered instances.

Solution: Retry the API call. If the problem persists, go to the Amazon Web Services Support Center for assistance.