As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, EICAS MESSAGE L/E SLAT ASSYM DISPLAYED L/E LIGHT ILLUMINATED WITH FLAP LEVER IN 1. BOTH FLAP POINTERS WERE CORRECT. AIR TURN BACK, AN OVERWEIGHT LANDING WAS NOT PERFORMED. ACFT IS DECLARED AOG. GROUND INSPECTION IS IN PROCESS. OPEN