Form author can setup the validation rules which will be used to check the submitted data.
The conditions are defined in the form builder page. In the "Validation Rule" tab, user can click "+ Create validation rule" button to add conditions to the form. The submitted data need meet those pre-defined conditions before it can be submitted to the system. The following conditions are supported.
In the form design page, you can click "Add Condition" button to enter the conditions for the form fields. Multiple conditions can be applied with AND/OR way.