As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT DUE TO THE FLIGHT CREW REPORTING THAT AFTER TAKEOFF CLIMBING THROUGH 2000 FEET, DOOR FORWARD CARGO LIGHT ILLUMINATED ON UPPER ECAM. THE AIRCRAFT LANDED SAFELY AT CLT WITHOUT FURTHER INCIDENT. MAINTENANCE CLEANED AND CHECKED THE PROXIMITY SENSOR PER AMM 52-31-00-0501 NO FAULTS NOTED.