Self-Registration of Users to the Portal 
Use
The Enterprise Portal comes with a self-registration master iView that you can integrate into your portal, thus allowing external users that do not exist in the corporate LDAP directory to register themselves as portal users. When a user registers himself, his user data is written to a separate branch of the corporate LDAP directory. The user can then log on using the user and password with which he registered himself. This function is useful for an external portal, for example.
Activities
To implement self-registration in your portal, you need to configure the Enterprise Portal as outlined in
Setting up Self Registration.In addition, you can modify the self-registration iView to suit your requirements. A default version is delivered with its source code in the Enterprise Portal. You can find the source files at <http/https>://<portal_server>/irj/docs/usermanagement/index.html by choosing the iView samples link.