Just like any other clerical error. Everything is entered in good faith and if you believe it to be in error... well fill this out and send it and attach a letter stating why you think it might be in error and then.....
Drifting a little off topic, but my own personal experience and research, if you are found guilty, or it says you were, then there are processes to get a correction. But if you have a non-conviction (Dismissed or not guilty) then there is no recourse to correct an error. I guess the idea is a non-conviction means none of it matters legally so there is no need to ever correct anything. Unfortunately in MA that is not true, you can still be haunted by it.