Corrective calendar synchronization
Corrective calendar synchronization finds and corrects differences between the calendar entries on BlackBerry® devices and the calendar entries on users' computers.
When you upgrade the BlackBerry® Enterprise Server Express to the latest version, corrective calendar synchronization is turned on by default. Corrective calendar synchronization is configured to run daily at 12:00 AM for all users whose devices are turned on. It checks users' calendars to correct any differences that display for the next seven days between calendars on devices and calendars in email applications. For more information about corrective calendar synchronization and changing the default settings, see the BlackBerry Enterprise Server Express Administration Guide.