[Pki-users] Uniqueness of Subject Name issue

Hello, I installed the last version of DogTag but I have a problem with the uniqueness of the Subject Name. By default I can issue more than one certificate with the same Subject Name. The problem becomes even worst when I use a profile based on directory authentication. So it looks that anyone with proper credentials can issue countless number of certificate with the same subject. Since is it a fresh installation and only the LDAP authenticator and publisher are configured I doubt it is an error related to any intervention to the certificate profiles. On the other side I can't fine in the documentation (even in the on of Red Hat Certificate Server) this discussed in any details. Do I do anything wrong or it is expected? Or if it is by default how could I make it possible to limit the users using the automatic enrolling to be able to have only one certificate? Thank you very much in advance for your answer. Best regards, Veselin Kolev