As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT SERVICE DOOR LIGHT CAME ON AFTER TAKEOFF POWER WAS SET. A LOW SPEED REJECTED TAKEOFF WAS PERFORMED AT ABOUT 30 KNOTS. LIGHT WENT OUT ON ITS OWN AFTER 2 MINUTES, OPERATED AND INSPECTED DOOR NO ABNORMALITIES FOUND. COMPLIED WITH DDP VERIFIED DOOR CLOSED.