As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP/RUDDER STOP INOPERATIVE ANNUNCIATOR LIGHT ILLUMINATED ON TAKEOFF ROLL. ABORTED TAKEOFF AT 90 KNOTS AND RETURNED TO GATE. MAINTENANCE TESTED SYSTEM AND CYCLED RUDDER HYDRAULIC POWER SHUTOFF VALVE. DISCREPANCY COULD NOT BE DUPLICATED.