Duplication during registration

[Mistangor]

Hi
i want to create a form that can only be used once by one individual let me say, if am registering individuals.
e.g Id:123 name: mistangor lastname:gor age:25 sex:male

so i don't want that person to be registered again once trying to enter the same information the system should send a massage that that name has been registered

thanks

[Grzesiek2010]

Hi @Mistangor

unfortunately it's not possible to refer to already saved/submitted forms when you fill a new form so you can't do that.