Input Validation
This is a demo of a required field that must not leave empty.
Custom Checkbox Validation
A demo of checkboxes that must be selected at least two fom any given list.
Server side
Tooltips
If your form layout allows it, you can use the tooltip prop to display validation feedback in a styled tooltip. Be sure to have a parent with position: relative on it for tooltip positioning. In the example below, our column classes have this already, but your project may require an alternative setup.