The Integration Directory, Integration Engine, Runtime Workbench, and Adapter Engine use the standard user management tools offered by SAP NetWeaver usage type Application Server (AS).
For the Enterprise Services Repository, a specific authorization concept can be used. It provides a Java-based user interface, with which you can maintain roles and authorizations for user-defined object sets.
More information: Defining User Roles.
More information on user management:
● User Management and User Roles
● User Administration and Authentication.