As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 250, ECAM AFT RIGHT DOOR UNLOCK ILLUMINATED. DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE WITHOUT FURTHER INCIDENT. INSPECTED AFT RT DOOR OPERATION, AND FOUND NORMAL. THE ACFT WAS NOT GROUNDED. R & R R4 DOOR PROXIMITY SWITCH IAW AMM 52-71-11. OPS CHECK NORMAL IAW AMM 52-71-00. CLEARED PLACARD.