As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MLG LANDING GEAR RETRACTION: AFTER TAKEOFF, THE LANDING GEAR HANDLE COULD NOT BE MOVED TO THE UP POSITION WHICH DID NOT ALLOW ALL 3 GEAR TO BE RETRACTED. AMBER WOW MISCOMPARE CAS MESSAGE DISPLAYED. RETURNED TO DEPARTURE AIRPORT. PERFORMED MLG OPS CHECK IAW CE-680A MM 32-00-00. OPS CHECKS GOOD. AT THIS TIME. NO OTHER DEFECTS NOTED.