Develop Reference

GoogleJsonResponseException: 403 Forbidden- Android

I am new to YouTube APIs. I have done create and fetch live events on YouTube. But I'm trying to start live events from my app I'm getting error:
Code:
fun startEvent(youtube: YouTube, broadcastId: String?) {
val transitionRequest = youtube.liveBroadcasts().transition(
"live", broadcastId, "status"
)
transitionRequest.key = context.getString(R.string.api_key)
transitionRequest.execute()
}
Error:
com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
POST https://www.googleapis.com/youtube/v3/liveBroadcasts/transition?broadcastStatus=live&id=[BROADCAST_ID]&key=[API_KEY]&part=status
{
"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"
}

Google cloud translation api

Caused by: com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
{
"code" : 403,
"errors" : [ {
"domain" : "global",
"message" : "Requests from this Android client application are blocked.",
"reason" : "forbidden"
} ],
"message" : "Requests from this Android client application are blocked.",
"status" : "PERMISSION_DENIED"

Creating new calendar under google account using Google Calendar API

I get the following error when trying to add new calendar under a google
account:
com.google.api.client.googleapis.json.GoogleJsonResponseException: 400 Bad Request
{
"code": 400,
"errors": [
{
"domain": "global",
"message": "Invalid resource id value.",
"reason": "invalid"
}
],
"message": "Invalid resource id value."
}

How to get subscription expiry date in android?

I am trying to get subscription expiry date using purchase status API (https://www.googleapis.com/androidpublisher/v1.1/applications/packageName/subscriptions/subscriptionId/purchases/token) but getting below response.May I know what is the correct way to achieve my objective?
"error": {
"errors": [
{
"domain": "global",
"reason": "required",
"message": "Login Required",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Login Required"
}
Is anybody know how to do it?
Thanks in advance.

Google plus for android bad access token

I been following Getting started and sign in to get access_token of user.
I do get an access token but when using it i am getting this error:
{
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Invalid Credentials"
}
}
When I am going to apis-explorer and using they token it works just fine.
Any ideas what am I missing?
This is then URL I am trying.
https://www.googleapis.com/plus/v1/people/me?key={my_api_key}&access_token=my_access_token

These tokens have a 1 hour expiration period.