This policy setting allows you to specify the interval for how long failed operations and other error data will remain in ...

This policy setting allows you to specify the interval for how long failed operations and other error data will remain in the cache before they can be deleted.  Synchronization can fail for any reason.  The failed operations and related instances are marked as "in error," and this data will eventually need to be removed from the cache.  It is recommended that this interval be larger than the regular cleanup interval to give the user opportunities to troubleshoot errors.

If you enable this policy setting, you may specify the interval (in minutes) for the times the failed operations and error data in the cache are deleted.    

If you disable or do not configure this policy setting, a default value of 10080 minutes (1 week) will be used.