Google backups randomly failing

[Paulo Nogueira]

Hi all,

We are running 3CX ver 15.5.0 and have setup automated backups every night to Google Drive which most of the time work but every now and then the system throws the error below, any ideas?

3CX Phone System tried to backup but failed due to the following reason(s):
System.Exception: The service drive has thrown an exception: Google.GoogleApiException: Google.Apis.Requests.RequestError Rate Limit Exceeded [403] Errors [
    Message[Rate Limit Exceeded] Location[ - ] Reason[rateLimitExceeded] Domain[usageLimits] ]

   at Google.Apis.Requests.ClientServiceRequest`1.<ParseResponse>d__34.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Google.Apis.Requests.ClientServiceRequest`1.Execute()
   at GoogleDriveImpl.GdFile.Close()
   at System.IO.Stream.Close()
   at System.IO.Compression.ZipArchive.CloseStreams()
   at System.IO.Compression.ZipArchive.Dispose(Boolean disposing)
   at _3cxNetBackupAndRestore._3cxBackup.FinishingTask()
   at _3cxBackupRestoreImpl.BackupRestoreUtils.Backup(IFilesystem filesystem, String instanceId, String cfgPath, String dbConnectionString, BackupConfig options, String fullpathFilename, Boolean sendEmail)
   at BackupRestoreSchedule.BackupJob.Execute(IJobExecutionContext context)

Thanks in advance.