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AI-generatedinvalid_grant error when refreshing a restored OAuth 2.0 refresh token
Problem: invalid_grant on restored token Goal: Determine how an OAuth 2.0 authorization server handles a refresh token that has been restored from backup after it has been revoked or expired. Constraints: The spec does not mandate token rotation; some servers reuse the same refresh token, others issue a new one. Backup restoration may bring an old token that
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