HTTP status code - 400

{ "ietf-restconf:errors" : {
    "error" : [
      "error-type": "application",
      "error-tag": "invalid-value",
      "error-severity": "error",
      "error-app-tag": "ietf-yang-push:period-unsupported",
      "error-info": {
        "ietf-yang-push":
        "modify-subscription-datastore-error-info": {
           "period-hint": 3000
        }
      }
    ]
  }
}