It's not a remediable error though. You can't give someone back the X years you incorrectly imprisoned them. If you don't discover the error you won't fix it. I

It's not a remediable error though. You can't give someone back the X years you incorrectly imprisoned them. If you don't discover the error you won't fix it. If the person dies while incarcerated from disease, suicide, or violence (all more likely in prison than outside) you can't undo it. All you can do is stop future punishment, not undo past unjust punishment.