You can manually wipe and synchronize your local calendar if the desktop and device calendar are not synchronized. Note that all changes that have not synchronized to the server will be lost. This feature is not supported by external calendars or shared calendars.
Tap .
Tap .
Tap Calendar.
Tap General settings.
Tap Resync calendar data.
Tap OK to allow BlackBerry Work to clear the local calendar on the server before the data is synchronized.