policies:entry.invalid

{
  "topic": "unknown/unknown/policies/errors",
  "headers": {
    "content-type": "application/vnd.eclipse.ditto+json"
  },
  "path": "/",
  "value": {
    "status": 400,
    "error": "policies:entry.invalid",
    "message": "The Policy Entry is invalid.",
    "description": "Policy entry does not contain any known permission like 'READ' or 'WRITE'"
  },
  "status": 400
}