As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: CLIMBING THRU 9000' AFTER TAKE OFF ECAM WARNING FOR LEFT AFT EMERGENCY EXIT DISPLAYED AMBER, AIRCRAFT RETURNED TO LAS WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT.(NO EMERGENCY WAS DECLARED). MAINTENANCE CLEANED DEBRIS FROM PROXIMITY SENSOR AND RE-SEATED PROXIMITY SWITCH HANDLE FLAP PER TSM 52-21-00-810-802*-A