I have set up a Transition to Resolve validation to require certain category/subcategory fields. These fields also include the drop down option of None -> None for Category -> SubCategory. When selecting None->None the validation fails. If I add the select option for None it will appear twice.
None->None is OK for this validation, but what we can't have is leaving these as Please select a category... Unfortunately, the Validation doesn't have such an option available.