What's the difference between formatting and validation rules in Nintex Forms?
Formatting rules allow you to control things like the visibility of a control, whereas validation rules allows entered data to be validated against other controls. Validation rules are useful if you want to, for example, ensure a field is not left blank if another field meets certain criteria. E.g. Ensure that the description field is not blank if the sum of the purchase order requisition is greater than $5000.
Looking for more information on validation rules?
Validation Rules and the People control - Nintex Forms
Using validation rules to ensure a comments box is not left empty
How to complete Date Validation using Nintex Forms 2013 Validation Rules.
Watch a video on how to use the Rules feature Show or hide controls with Rules in Nintex Forms
