A custom user registry is a customer-implemented user registry, that implements the UserRegistry Java interface, as provided by the product. A custom-implemented user registry can support virtually any type of an account repository from a relational database, flat file, and so on. The custom user registry provides considerable flexibility in adapting product security to various environments where some form of a user registry, other than Lightweight Directory Access Protocol (LDAP) or Local Operating System (LocalOS), already exists in the operational environment. To enter the server user ID and password: <ol> <li><strong> Click to perform</strong> loads the Custom user registry configuration page.</li> <li>Enter the server user ID and password</li> <li>Press <strong> Ok</strong> to submit the changes.</li> </ol> To continue, click <strong> Next step</strong>. <ol> <li>Enter the full file name of the implementation class file in the Custom registry class name field as a dot-separated file name. In order to ensure that the class file exists in the WebSphere Application Server class path, the suggested location for the custom registry class is the ${INSTALL_ROOT}/lib/ext directory. </li> <li>Press <strong>Ok</strong> to submit the changes.</li> </ol>