I am trying to obtain an access token for ProactiveEvents API. It's the first time so I am using postman for test all the services I need to use to send a notification to an Alexa device.
In the first step, obtaining the access token, I have this result:
Note that the header defined is:
Client_id and client_secret values were extracted from Alexa Developer Console > Permissions > Alexa Skill Messaging
Anyone has the same issue?
Thanks in advance,