Empty Response. This code is returned when the unique identifier of an Etag is passed in an optional If-None-Match header when making a GET request. This allows you to check the server for status updates about a requested resource. If the Etag value matches the cached entry, an empty response (code 304) is returned. If the Etag value does not match the cached entry, a successful response (code 200) with new data is returned.

Passing an Etag header returns a successful response (code 200) with a hashed unique identifier of the Etag in the response. The unique identifier of the Etag can be passed in a request using an If-None-Match header to get a specifically cached response if it still exists in the cache.

• The API key name already exists.
• An invalid group name is provided.
• The request format is invalid due to invalid parameters or parameter values.

• The API key is revoked.
• The JWT token is corrupted.

Internal Server Error. To assist with troubleshooting, this code returns an optional response header. A correlation ID is included in both the response header (x-correlation-id) and in the response body. The following example shows a sample response body with the correlationId:

500 - Internal Server Error
{
  ---
  correlationId: “xxxx-xxx-xx”
}

For assistance with understanding the internal server error, contact Zscaler Support and provide the correlation ID to learn more.