policies:policy.toomanymodifyingrequests

{
  "topic": "unknown/unknown/policies/errors",
  "headers": {
    "content-type": "application/vnd.eclipse.ditto+json"
  },
  "path": "/",
  "value": {
    "status": 429,
    "error": "policies:policy.toomanymodifyingrequests",
    "message": "Too many modifying requests are already outstanding to the Policy with ID 'com.acme:the_policy_id'.",
    "description": "Throttle your modifying requests to the Policy or re-structure your Policy in multiple Policies if you really need so many concurrent modifications."
  },
  "status": 429
}