126.96.36.199 PidLidAppointmentSequence Property
The PidLidAppointmentSequence property ([MS-OXPROPS] section 2.25) specifies the sequence number of a Meeting object. A Meeting object begins with the sequence number set to 0 (zero) and is incremented each time the organizer sends out a Meeting Update object. The sequence number is copied onto the Meeting Response object so that the client or server knows which version of the meeting is being responded to. This property is unsigned. For more details about when and how a client increments the sequence number, see section 188.8.131.52.