[BoomerSooner]

What about this protest makes it an invalid protest? The protest would be based on the ignorance of the coach that files the protest, but the purpose of protesting is to ensure the rules are properly applied. If he is under the false belief that the rules require one umpire to check with another in any situation upon the request of a coach, then his protest is that the umpire failed to apply the erroneous rule properly. As we all know there is no such rule, thus the appeal would be denied, but that doesn't make it an invalid appeal.

Invalid appeals are those that don't concern the application of the rules. The biggest example of invalid appeals are those concerning judgement calls. Also falling in that realm are mistakes that are made but have remedies described in the rules (substitution errors, batting out of order) as long as the appropriate remedy is applied.