As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RECEIVING AN AMBER R REV UNSAFE MESSAGE ON TAKEOFF FROM TLH. CREW ABORTED THE TAKEOFF AND THE AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. MAINTENANCE PERFORMED CHECKS AND INSPECTED THE THRUST REVERSER IAW THE AIRCRAFT MAINTENANCE MANUAL. NO DEFECTS WERE NOTED. AIRCRAFT WAS RELEASED FOR SERVICE.