As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED CARGO BOTTLE LOW CAS MESSAGE CAME ON AT FL260 EN ROUTE FROM CLT TO XNA. CAS MESSAGE WENT OUT ON DESCENT ABOUT FL210 TO FL200. CREW DIVERTED TO TYS AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED CARGO FIRE BOTTLES, FOUND BOTTLES TO BE FULL AND PERFORMED CHECKS OF CARGO FIRE EXTINGUISHING SYSTEM USING AIRCRAFT MAINTENANCE MANUALS. NO DEFECTS NOTED. AIRCRAFT RELEASED FOR SERVICE.