As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)DURING TAKEOFF ROLL THE LEADING EDGE SLAT ASYMMETRY MESSAGE OCCURRS AND THE AIRCRAFT ABORTED THE TAKEOFF. AFTER VERIFICATION THE FLAP SLAT ELECTRONIC UNIT WAS REPLACED. SAME MESSAGE OCCURRED ON NEXT F LIGHT. L/H FLAP LOSS SWITCH REPLACED.