3.1.4.7.3 Sending a Meeting Update
The organizer or delegate of the organizer sends an update to inform attendees of changes to an event that has already been sent out (according to the PidLidFInvited property (section 2.2.4.4) on the Meeting object). To do so, the client creates and submits a Meeting Update object, following the same rules as sending a Meeting Request object, as specified in section 3.1.4.7.1, with differences as explained in this section.
If the value of the PidLidLocation property (section 2.2.1.4) was modified by the user on the Meeting object, the client SHOULD set the value of the PidLidOldLocation property (section 2.2.6.7) on the Meeting Update object to the old value. Similarly, if the value of the PidLidAppointmentStartWhole (section 2.2.1.5) and/or PidLidAppointmentEndWhole (section 2.2.1.6) properties were modified by the user on the Meeting object, the client SHOULD set the value of the PidLidOldWhenStartWhole (section 2.2.6.8) and PidLidOldWhenEndWhole (section 2.2.6.9) properties to the old values respectively.<50>
The client modifies the sequence number as specified in section 3.1.5.4.