220.127.116.11 PidLidFInvited Property
The PidLidFInvited property ([MS-OXPROPS] section 2.135) indicates whether invitations have been sent for the meeting that this Meeting object represents. A value of FALSE or the absence of this property indicates that a Meeting Request object has never been sent. A value of TRUE indicates that a Meeting Request object has been sent. After this value is set to TRUE on a Meeting object, it MUST NOT be changed.