403 Forbidden "message": "Invalid transition"

[yokei15]

Facing issues as 403 Forbidden "message": "Invalid transition" below is my log & code implemented but i do know what actually i have to pass the params in parts.

Is that correct way to pass the params??

Error Log:

com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
    {
      "code": 403,
      "errors": [
        {
          "domain": "youtube.liveBroadcast",
          "message": "Invalid transition",
          "reason": "invalidTransition",
          "extendedHelp": "https://developers.google.com/youtube/v3/live/docs/liveBroadcasts/transition#params"
        }
      ],
      "message": "Invalid transition"
    }

Code:

public static void startEvent(YouTube youtube, String broadcastId)
            throws IOException {

        try {
            Thread.sleep(20000);
        } catch (InterruptedException e) {
            Log.e(MainActivity.APP_NAME, "", e);
        }

        Transition transitionRequest = youtube.liveBroadcasts().transition(
                "live", broadcastId, "id,snippet,contentDetails,status");
        transitionRequest.execute();
    }

Thanks in advance.