HTTP status code - 400

{ "ietf-restconf:errors" : {
    "error" : [
      {
        "error-type": "application",
        "error-tag": "invalid-value",
        "error-severity": "error",
        "error-app-tag":
            "ietf-subscribed-notifications:dscp-unavailable"
      }
    ]
  }
}