2.2.3.2.3 RegisterResponse Message
The RegisterResponse Message is a RegisterResponse element, as specified in [WSC10] and [WSC11], with the additional constraints listed in the following figure.

Figure 9: RegisterResponse Element constraints
The Enlistment Element (section 2.2.3.1.3) MUST be the only element in the WS-Addressing ReferenceParameters element [WSADDR] in the WS-Coordination CoordinatorProtocolService element in the RegisterResponse element.