1.8 Vendor-Extensible Fields

Because P2P Grouping layers on top of P2P Graphing, applications which utilize P2P Grouping can define their own Record Types. Each Record in a Group has a Record Type, which is expressed as a UUID. A vendor can use any UUID except those in the P2P Graphing reserved range (see [MS-PPGRH] section, or those reserved by P2P Grouping (see section 2.2.3).