Advanced validation for dynamic form fields & extra fields
You can define advanced validation to dynamic form fields by giving them set of rules, such as numeric only or alphanumerical orders.
Location: (admin) Store Configuration - Manage Form Fields - Add
If you want to check Customer’s Extra Field:
Location: (admin) Customer - Website Customers - Extra Fields
You can check the result from front end:
Location: (front end) My Account - My Profile
