Things like dates and times can be blocked from being checked, but the advantage is that every other field can be checked without the need to make manual validations. Any warnings from the IBM i can also be captured and checked, with levels set to show warnings when a system has breached the limits
Like using Wonder Women’s enhanced senses, any potential changes to a file can be run through the system, and the potential impact on the software can be estimated before the change is made. Using these plan cases, the best-associated tests can be employed when the actual change is made, thus minimizing any potential knock-on effect.