As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT A RIGHT AFT EMERGENCY EXIT DOOR ECAM MESSAGE DISPLAYED ON TAKEOFF. THE FLIGHT CREW ABORTED THE TAKEOFF AT APPROXIMATELY 90 KNOTS AND RETURNED TO THE GATE. MAINTENANCE FOUND SDAC 1 (SYSTEM DATA ACQUISTION CONCENTRATOR) TO BE FAULTY AND REPLACED IT PER AMM 31-55-34. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.