Issue submitted via Case# 4799951801.
We have a skill in BETA testing (amzn1.ask.skill.849efb3c-01f9-49d3-a1c9-28cbd337688c) and one of our testers encountered an issue with the access token. An attempt was made to refresh the token, and our system responded with a new token and refresh token. However, subsequent requests from Alexa continue to try to refresh using the old refresh token which causes failures. The original refresh token, 768703210614040502, was updated to 888185729157596864 in our response, but requests continue to use 768703210614040502.
Log entries supplied in the case.
Also, the client secret is not supplied in the token messages. Please let me know if you need additional details. Thanks.