In error cases, the API returns an HTTP Problem JSON object with the application/problem+json media type. For example, when you try to GET a site that does not exist, the API responds with a JSON object similar to the example below:

  "type" : "",
  "title" : "The requested entity could not be found",
  "detail" : "Site 99999 does not exist",
  "instance" : "",
  "entityType" : "Node",
  "entityId" : 99999