3.18.1 Abstract Data Model
This section describes a conceptual model of possible data organization that an implementation maintains to participate in this protocol. The described organization is provided to explain how the protocol behaves. This document does not mandate that implementations adhere to this model as long as their external behavior is consistent with that described in this document.
The server transaction envoy (section 3.18) maintains the following data structures:
A TransactionStreamID GUID. This GUID is shared with and initialized by the Server Non-Root Transaction Object (section 3.8).
An SWhereaboutsID GUID.
A DtcCapabilities value, consisting of a set of flags specified in section 2.2.6.1.