As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GREEN HYDRAULIC SYSTEM FLUID LOSS - ECAM LOW PRESSURE. EMERGENCY DECLARED. RETURNED TO DEPARTURE, LANDED WITHOUT INCIDENT. AIRCRAFT TOWED TO GATE AND THE AIRCRAFT WAS GROUNDED. MAINTENANCE REPLACED THE RIGHT HAND MAIN LANDING GEAR SIDE STAY ACTUATOR HOSE.