Harrison Ford's Bogus Arrest Was Rookie Cop Mistake

Harrison Ford was the unwitting victim of a police training session gone awry ... TMZ has learned.

Cops in Huntington Beach, CA tells us Ford's name was entered into their arrest records by a newly hired officer during data entry training. It's S.O.P. for officers to enter fake names and info while learning how to use the system -- but they're supposed to delete all entries after each training session.

We're told that didn't happen with Harrison ... so his "arrest" for corporal injury on his spouse was auto-populated into the real police blotter. It's since been removed.

HBPD wants to stress it was an honest mistake, and Ford was never in any trouble whatsoever.

Guess that's why they call it training.