Attempting to call google chat API in Postman on the developer's computer, we get the following response.
{
"error": {
"code": 403,
"message": "This API is not accessible for external HTTP caller.",
"status": "PERMISSION_DENIED"
}
}
We have authenticated using OAuth2 (apiKey/secret) with scope https://www.googleapis.com/auth/chat.messages.
We did like to use Postman to try out this API.
Is it possible to get around this error? If so, how?