Validation in a list view

I need to add validation for a listview - basically that it has 'something' but i see there's no way to add validation, so I want it to look the same as the existing validation messges - otherwise it will look awful and unprofessional, what's the best/preferred way?

Thanks

You can use a separate component (like a Text component) positioned near the ListView to display validation messages conditionally, write some js code that checks the conditions you want to validate for the ListView. For example, ensure the ListView has items or specific data before allowing submission.