As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER LIFT-OFF, RECEIVED SMOKE AFT CARGO SMOKE MESSAGE. FOLLOWED ECAM AND COM PROCEDURES AND RETURNED TO DEPARTURE FIELD FOR NORMAL LANDING. MAINTENANCE REPLACED THE SPENT FIRE EXTINGUISHER BOTTLE AND THE FLIGHT WARNING COMPUTER. OPERATIONAL CHECK OK.