The portal uses the 'User Management Engine' (UME) which is an integral part of SAP Web Application Server Java. The UME manages user and user-related data (roles, groups) which can be retrieved from an LDAP directory, a SAP Web Application Server Java, a database, or a combination of these. Administration tools allowing you to manage users, groups, and roles are integrated in the portal user administrator role. A configuration tool for configuring the UME is integrated in the portal system administrator role.
In addition, the UME provides many features such as self-registration with approval workflow, notification emails, and so on.