2.2.6.11 PidLidCalendarType Property
Type: PtypInteger32 ([MS-OXCDATA] section 2.11.1)
When the Meeting Request object represents a recurring series or an exception, the PidLidCalendarType property ([MS-OXPROPS] section 2.48) is the value of the CalendarType field from the PidLidAppointmentRecur property (section 2.2.1.44). Otherwise, this property is not set and is assumed to be zero.