Rules for Entity Life-Cycles

The following rules apply to life-cycles but are not directly enforced by CA Gen:

Each entity has a life that must pass through at least two states: the creation state and the termination state. The creation state is its first state; the termination state is its last state.
A null state is never shown as an entity state subtype in the life-cycle partitioning.
An entity may only change states as the result of a process execution.
Each entity must, at any point in time, be in one and only one state for each life-cycle.
For each transition between entity states, there must be an elementary process that may perform that transition.