2.2.1.37 PidTagReplyRequested Property
Type: PtypBoolean ([MS-OXCDATA] section 2.11.1)
The PidTagReplyRequested property ([MS-OXPROPS] section 2.918) specifies whether the organizer requests a reply from the attendees.
For Calendar objects, this property MUST have the same value as the PidTagResponseRequested property ([MS-OXOMSG] section 2.2.1.46).