In my (limited) experience, mistakes among LEAs is more along the lines of they have data that doesn't match a real person. I'm not saying it doesn't happen, but getting people mixed up isn't something that I've seen.

There's a lot of entropy in first/middle/last names, DOBs, SSN, driver's license, etc. so accidental typo matches just means bad data, not some other person.

(Obviously, intentional identity theft notwithstanding.)