3.4.1.3.3 Active
The following events are processed in this state:
Receiving a TXUSER_SETTXTIMEOUT_MTAG_SETTXTIMEOUT, TXUSER_BEGIN2_MTAG_COMMIT, or TXUSER_BEGIN2_MTAG_ABORT Message (section 3.4.5.1.3.2)
Receiving a TXUSER_BEGINNER_MTAG_PROMOTE Message (section 3.4.5.1.3.1)
Unilaterally Aborted (section 3.4.7.23)