"our goal is to have 100 percent accurate data, 100 percent of the time." Good to have a goal... how are you verifying to know you reached that goal? Reality

"our goal is to have 100 percent accurate data, 100 percent of the time." Good to have a goal... how are you verifying to know you reached that goal? Reality check: if there are humans involved in any part of the process then that goal is not possible. Are there metrics on data validation that would be more meaningful and not exceed your budgets?