As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT INITIATED THE TAKE-OFF ROLL ON RUNWAY 27, WHEN THEY NOTICED A MAIN CABIN DOOR OPEN LIGHT ILLUMINATE. CREW REJECTED THE TAKE-OFF, AND EXITED THE ACTIVE RUNWAY. DOOR WAS OPENED AND RECLOSED BY FLIGHT CREW. A/C TAXIED TO RUNWAY AND DEPARTED WITHOUT FURTHER INCIDENT.