As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW CALLED FLIGHT CONTROL AND REPORTED AN ABORTED TAKEOFF (ATO) DUE TO THE THRUST MANAGEMENT NOT ENGAGING. FLIGHT CONTROL, THE CAPTAIN AND A MAINTENANCE CONTROLLER CONFERENCED TOGETHER AND DETERMINED THAT THE CREW NEEDED TO COMPLETE A DEFFERAL FOR THE THRUST MANAGEMENT SYSTEM. SYSTEM WAS DEFERRED PER MEL 22-30-1 AND THE A/C WAS DOWNGRADED TO CAT I. A/C RETURNED TO SERVICE.