As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A LEFT THRUST REVERSER UNLOCK CAS MESSAGE IN FLIGHT. DIVERTED AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, LUBRICATED THE PDU LOCK PISTON AND OPS CHECKED THE LT THRUST REVERSER USING AMM. AIRCRAFT WAS RELEASED FOR SERVICE.