Calendar Server WCAP Recurrence Overview

Recurrence handling occurs as follows:

• A recurring series of events or todos has a master entry plus entries for exceptions.

• Changing the rrules of a single instance returns an error. When rrules are modified for a recurring series, the whole series is deleted and recreated.

• Changing dtstart of a recurring series entry causes the whole series to be recreated with the new dtstart, thereby losing all exceptions.

• Inserting a rid that was not part of the original rule is not supported.

• Multiple rrules for any component are not supported.