2.2.10.2 Exception Embedded Message Object
The data stored in the Embedded Message object that is represented by the PidTagAttachDataObject property ([MS-OXCMSG] section 2.2.2.8) contains properties that are specific to the exception. Any property that is not set on the Exception Embedded Message object is obtained from the recurrence series. The following properties SHOULD NOT be set on an Exception Embedded Message object; if they are set, they are not used by the client or server:
PidLidAppointmentLastSequence (section 2.2.4.2)
PidLidMeetingWorkspaceUrl (section 2.2.1.48)
PidLidContacts ([MS-OXCMSG] section 2.2.1.59.2)
PidTagSensitivity ([MS-OXCMSG] section 2.2.1.13)
PidLidPrivate ([MS-OXCMSG] section 2.2.1.15)
PidNameKeywords ([MS-OXCMSG] section 2.2.1.17)
The properties that are specific to the Exception Embedded Message object are specified in sections 2.2.10.2.1 through 2.2.10.2.7.