PidTagRecipientProposed Property

Type: PtypBoolean ([MS-OXCDATA] section 2.11.1)

A value of TRUE for the PidTagRecipientProposed property ([MS-OXPROPS] section 2.894) indicates that the attendee proposed a new date and/or time. A value of FALSE or the absence of this property means either that the attendee did not yet respond or that the most recent response from the attendee did not propose a new date or time. This value cannot be TRUE for attendees in a recurring series.