Using System State Manager › How to Specify and Store Actions › Empty-string and NULL Actions

Empty-string and NULL Actions

If the action specified in the ACTION_TEXT column is an empty string, the SSM interprets it as a valid action (in this case, a do nothing action). No other processing occurs.

If the ACTION_TEXT column contains a NULL value, the SSM interprets it as a non-action and continues searching the action table for another match.