HealthCheckAlreadyExists

The health check you're attempting to create already exists. Amazon Route 53 returns this error when you submit a request that has the following values:

• The same value for CallerReference as an existing health check, and one or more values that differ from the existing health check that has the same caller reference.

• The same value for CallerReference as a health check that you created and later deleted, regardless of the other settings in the request.