As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A LEFT REVERSER UNLOCK MESSAGE. AIRCRAFT RETURNED TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED AN OPERATIONAL CHECK AND FOUND NO DEFECTS. MAINTENANCE TROUBLESHOT AND PERFORMED OPERATIONAL CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT WAS RELEASED FOR SERVICE.