As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, RECEIVED ECAM MESSAGE "C/B TRIPPED ON OVHD PNL". CABIN EMERGENCY LIGHTS AT SEAT ROW 9 AND AFT ILLUMINATED. CIRCUIT BREAKER WAS LEFT OUT OF REMAINEDER OF THE FLIGHT. MAINTENANCE TROUBLESHOOTING REVEALED A BARE WIRE AT SEAT TRACK 9ABC. REPLACED THE HARNESS. OPERATIONAL CHECK OK.