this usually happens when the numbers on the cars are not big, clear, and contrasting or a 2 driver car. Example is Buhlinder Sethi #20 was mistaken as #120.
The car had big enough numbers, but it wasn’t clear where one started and the other ended. To us in the trailer, it looked like 4120. There were attempts to cross out part of the number, but that won’t clear, we though just the 4 was crossed out to make 120.
I’ll add that numbers are important, if you want your runs scored accurately. Ask yourself if you could read the number from all the way across the Marina site, that could be up to 500ft. If you have two numbers, are you making it totally obvious to the person at 500ft which one is crossed out.