As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED AN AFT CARGO SMOKE WARNING ON THE GROUND, WHICH MX INVESTIGATED. ON APPROACH THE CREW AGAIN REPORTED ANOTHER BRIEF AFT CARGO SMOKE WARNING. CARGO FWD BAY SMOKE RED ECAM ALERT CAME ON FOR LESS THAN 2 SECONDS 3 TIMES DURING FLIGHT. DID NOT FIRE EXTINGUISHER. BELIEVE IT WAS SPURIOUS GLITCH. SDCU 1 + SCDU 2 RESET ON GROUND MSG CLEARED. SDCU TEST C/O NO FAULTS FOUND. SYS CONSIDERED SERVICIABLE.