As indicated in the “Pre-Validation Sequence” section, the first pre-validation check performed by the validation service is to determine whether or not the UI component should be hidden based on the installed set of Windchill solutions. For example, if Windchill PDMLink is not installed, certain actions should never be available.

As a rule of thumb, this type of solution-based logic should NEVER be included in your validator or filter classes. You can assume that if your validator or filter has been called, the UI component being validated has already passed any applicable solution-based checks.

Solution-based logic should be implemented in a solution group.