220.127.116.11 PtypObject and PtypEmbeddedTable Types
Message store and address book servers treat these property type somewhat differently, but in both cases these property types represents a complex structure. Access to these properties requires the server to construct an object, and the client to issue requests similar to those used for top-level objects.
Message store servers do not allow access to properties of type PtypObject through the RopGetPropertiesSpecific ROP ([MS-OXCROPS] section 18.104.22.168) or the RopGetPropertiesAll ROP ([MS-OXCROPS] section 22.214.171.124). Instead, properties of this type MUST be accessed with the RopOpenStream ([MS-OXCROPS] section 126.96.36.199) or RopOpenEmbeddedMessage ([MS-OXCROPS] section 188.8.131.52) ROP requests.