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 INTO DFW DUE TO THE FLIGHT CREW REPORTING A YELLOW HYDRAULIC SYSTEM LOW QUANTITY ECAM MESSAGE. THE AIRCRAFT LANDED SAFELY AT DFW AND WAS TOWED TO THE GATE. MAINTENANCE SERVICED THE YELLOW HYD SYSTEM AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 29-13-00.