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Refresh_token can only be used once

Hello team,

I try to use refresh_token in to generate new access token.
It seems it can only use once, the 2nd time to request access_token, it shows bellow error:

{'error_description': 'Persisted access token data not found', 'error': 'invalid_grant'}

url = ''

More information: the sampe method is not working anymore

Hello @fountainhead,

Using the refresh token to generate new access tokens not only generates a new access token but also a new refresh token, revoking the existing one. It is not always happening, but most of the times.
After using the refresh token grant successfully, if you access the , it should display the updated credentials for you.

I see. thank you for your response!