question

Hi hichamt, I see a couple of things with this request. 1) If you are really trying to get an access token when you have an expired access token then the post request that you have shown does not contain the correct information. Please see the documentation here: ( https://developer.amazon.com/public/solutions/alexa/alexa-voice-service/docs/authorizing-your-alexa-enabled-product-from-an-android-or-ios-mobile-app) With a refresh_token grant token you should be sending the following: send the following parameters: -> grant_type: refresh_token -> refresh_token: The refresh token. -> client_id: Call getClientId() The client secret is not required. 2) The refresh tokens looks malformed to me (it should be much longer). Can you expand on how you retrieved it?

Hello, Thanks for your reply. Regarding the second point, i didn't put the correct one :) . And about the first one, i send the correct parametres according to the documentation except the client_secret which you told me that it's not required. I try without client_secret but have same error. Here is the link of documentation to get the refresh token and access token : https://developer.amazon.com/public/solutions/alexa/alexa-voice-service/docs/authorizing-your-alexa-enabled-product-from-a-website 1) To retrieve the access token and refresh token, we use the Authorisation Code grant. Here is the request found in the doc. These are fake values : POST /auth/o2/token HTTP/1.1 Host: api.amazon.com Content-Type: application/x-www-form-urlencoded Cache-Control: no-cache grant_type=authorization_code&code=ANBzsjhYZmNCTeAszagk&client_id=amzn1.application-oa2-client.b91a4d2fd2f64&client_secret=6963038c1c2063c33ab9eedc0cf8&redirect_uri=https%3A%2F%2Flocalhost 2) To get an access token when we have an expired access token, we use the refresh token grant type. In my first post, i show how we do it according to the doc in the same link. Thanks Again. Message was edited by: hichamt

Do you see any idea for this problem ? Thanks in advance.

Seems that we had an issue with multiple client ids (amazon connect button vs AVS security profile ) It's clarified and fixed now Thanks elstryan for your support !

Glad that you got it sorted out hichamt!