As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT AT FL290, THE RT REVERSER UNLOCK MESSAGE APPEARED. AIRCRAFT DIVERTED TO ATLANTA AND LANDED WITHOUT FURTHER INCIDENT. RT THRUST REVERSER DEFERRED PER MEL. LATER R&R RT ENGINE TR STOW SWITCH IAW AMM 78-37-01-400-801. RT THRUST REERSER OPS CHECKED IAW AMM AND AIRCRAFT RETURNED TO SERVICE.