2.2.8.1 PidTagMessageClass Property
Type: PtypString8 ([MS-OXCDATA] section 2.11.1.2)
The value of the PidTagMessageClass property ([MS-OXCMSG] section 2.2.1.3) MUST be "IPM.Schedule.Meeting.Canceled".
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Type: PtypString8 ([MS-OXCDATA] section 2.11.1.2)
The value of the PidTagMessageClass property ([MS-OXCMSG] section 2.2.1.3) MUST be "IPM.Schedule.Meeting.Canceled".