As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: AT CRUISE FLIGHT APU AGENT DISCHARGED LIGHT ON AFTER LANDING LIGHT WENT OUT. OPS CHK APU FIRE EXTINGUISHING SYS REF AMM 26-22-00 ALL OPS NORMAL ACCOMP VISUAL INSPECTION OF APU COMP AND APU FIRE EXT BOTTLE NO DEFECTS NOTED.