No unconditional default transitions
Select the diagnostic action to take when a chart does not have an unconditional default transition to a state.
This chart construct can cause inconsistency errors. To locate this construct in your model and correct it, use this diagnostic. If a chart contains local event broadcasts or implicit events, detection of a state inconsistency might not be possible until run time.
No warning or error appears.
A warning appears.
An error appears and stops the simulation.