Schematron using XPath 2.0
The attribute juno:mission_phase_name must be nulled or equal to one of the following values 'Capture Orbit', 'Deorbit', 'Inner Cruise 1', 'Inner Cruise 2', 'Inner Cruise 3', 'Jupiter Approach', 'Orbits 1-2', 'Outer Cruise', 'Period Reduction Maneuver', 'Quiet Cruise', 'Science Orbits'.