You can correct any number of a fouler if you have knowledge there was a mistake. That is usually difficult to find out all the time. When you know there was a mistake made, just get it corrected ASAP. The same goes if you fouled out a player. Correct the mistake ASAP. I would also make sure that I have a good pregame with the table personnel to cover these possible mistakes and if they have any questions from you to tell you immediately. Also many of these mistakes are made when you go too fast. If you take your time, you can make sure you have the right number and make sure you report the right number. Then you do not have to worry about what might happen in these situations.
Peace