Issue
Google Directory Sync Error message:
Google.Apis.Requests.RequestError Not Authorized to access this resource/api [403] Errors [ Message[Not Authorized to access this resource/api] Location[ - ] Reason[forbidden] Domain[global] ]
Answer
Google User To Impersonate account is disabled. Re-enable to remove error message
Push All Students to GAFE to sync accounts, wait for overnight sync or fix manually by linking the student account