Oauth refresh token not generating after an hour

We have integrated an oAuth and all works good but after an hour the token got expired and the new fresh token is not generating to update on the DB. We have tested these cases, using postman, I am able to generate a refresh token before the access token expires ie before an hour, but it’s not allowing us to generate the token after it expires. I have attached the screenshot for your reference.

Hi @cecureus,

Thanks for reaching out!

Can you make sure that you’re using the same refresh_token that was originally returned when you retrieved the initial access_token? If you use a different refresh_token, this will not work.

Let me know—thanks!
Will