AppointmentItem.RecurrenceState (Outlook)

Returns an OlRecurrenceState constant indicating the recurrence property of the specified object. Possible return values are olApptException - The appointment is an exception to a recurrence pattern defined by a master appointment, olApptMaster - The appointment is a master appointment, olApptNotRecurring - The appointment is not a recurring appointment, olApptOccurrence - The appointment is an occurrence of a recurring appointment defined by a master appointment.

Dim orsRecurrenceState As OlRecurrenceState
orsRecurrenceState = Session.CreateSharingItem.Move.Items(1).RecurrenceState