As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR L4 NOT ARMING COMFIRM DOOR ARMING GOOD, JUST ARMING LIGHT INDICATOR LIGHT INOP. SWAPPED WITH GOOD LIGHT ASSY NO HELP. REQUEST MEL 2566U FOR DOOR 4L SLIDE LIGHT INDICATION. MEL 2566U. REFERENCE LOG PAGE 5487168 FOR CORRECT DOOR LOCATION AND DEFERRAL PROCEDURE