Hi Hamza,
Thank you for reaching out to the Google Ads API support team.
With regard to your concern on how long can Google OAuth2 Refresh Token live, as per our documentation (https://developers.google.com/google-ads/api/docs/oauth/internals#access_token_expiration) an access token has an expiration time (based on the expires_in value) after which the token is no longer valid. For more details about the refresh token expiration, refer to the Google Identity Platform OAuth documentation (https://developers.google.com/identity/protocols/oauth2#expiration). Also, by default, our client libraries (https://developers.google.com/google-ads/api/docs/client-libs) automatically refresh expired access tokens.
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Google Ads API Team |