3.7.1.1.6 Requesting Phase Zero
The following events are processed in this state:
Receiving PARTNERTM_PROPAGATE_MTAG_ABORTNOTIFY (section 3.7.5.1.1.1.3)
Begin Phase Zero (section 3.7.7.3)
Receiving PARTNERTM_PROPAGATE_MTAG_PROTOCOL_ERROR (section 3.7.5.1.1.1.4)