Zip codes, phone numbers, custom ID’s require the custom input field in a front-end registration form to be made up of numbers only
- If you select an input field you’ll notice a new property named Numbers Only appeared below the other properties. By checking it you enforce the field to be composed of numbers only
- If you enter letters in a numbers only field, it will throw an error
Find out more by reading this tutorial on using the Profile Builder – Numbers Only and Phone Validation Add-on.