PidLidAppointmentMessageClass Property

 Type: PtypString ([MS-OXCDATA] section

The PidLidAppointmentMessageClass property ([MS-OXPROPS] section 2.16) indicates the value of the PidTagMessageClass property ([MS-OXCMSG] section of the Meeting object that is to be generated from the Meeting Request object. The value of the PidLidAppointmentMessageClass property MUST either be "IPM.Appointment" or be prefixed with "IPM.Appointment.". This property is not required.