Hi
I don't know if it possible to do this but what I want to achieve is to set a field so that it checks to ensure the value that has been entered is unique.
Currently what is happening is that an individual is creating a user account, a couple of months later they forget and then create a new account using a different username and email.
One of the fields on their profile page that they are required to complete is their Identification number, what I want to achieve is that if they have a profile and then create a new one the system picks up that they already have an account and then prompts them to contact us for assistance.