As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, DURING FLIGHT, THE SERVICE DOOR BECAMED DISARMED. THE RED WARNING LIGHT FLASHES CONTINUOUSLY IN CABIN DOORS AND CABIN INTERCOM DATA SYSTEM. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE FORWARD SERVICE DOOR SLIDE ASSEMBLY. OPS CHECKED OK.