As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLAT ASYMMETRY MESSAGE DURING CLIMB WITH NO SLAT MOVEMENT SELECTED. COMPLIED WITH COM PROCEDURES. NO FURTHER PROBLEMS NOTED. CREW DECLARED AN EMERGENCY INTO MKE, AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT OUTBOARD SLAT DRIVE TRANSMITTER. SYSTEM OPERATIONAL TEST SATISFACTORY.