This blog will outline the various user types found in SAP ABAP Stack Systems
User Types
In SAP systems, Users play a pivotal role in accessing and utilizing the various functionalities provided by the system.
In the Transaction SU01- user management system, we primarily categorize users into five distinct types:
1.Dialog
2.System
3.Communication
4.Reference
5. Service
Dialog Users (A): These are regular users who interact with the SAP system through the graphical user interface (GUI) or web interface ( SAP GUI for HTML). They perform tasks such as entering data, running reports, and executing transactions relevant to their roles assigned to them.
Multiple logon is checked.
System Users(B): System users are typically used for background tasks, such as running batch jobs, executing automated processes, or performing system-to-system communication. They do not require direct interaction with the GUI.
Multiple logon is allowed, Only an administrator user can change the password.
Communication Users (C ) : Communication users are primarily used to establish connections and facilitate communication between SAP systems or between SAP systems and external applications, services, platforms and integration scenarios such as RFC (Remote Function Call), SOAP (Simple Object Access Protocol), HTTP (Hypertext Transfer Protocol), IDoc (Intermediate Document), ALE (Application Link Enabling), EDI (Electronic Data Interchange), and more .
Logon with SAPGUI is not possible
Reference Users (L) :Reference users are special types of user accounts that serve as templates or blueprints for creating new user accounts with predefined settings, roles, authorizations, and other attributes. They are used to streamline the process of user creation and ensure consistency across user profiles within the SAP system
No logon possible.
Service Users (S) : Service users are considered technical users because they are primarily used for technical tasks rather than human interaction. They are often assigned specific technical roles and authorizations required for performing their designated tasks.
unlike regular dialog users who interact with the SAP system through the graphical user interface (GUI), service users typically do not require direct interaction with the GUI. They may communicate with the system through interfaces, APIs (Application Programming Interfaces), or background processes.however SAP GUI logon is Possible
Multiple Log on allowed.
User Master Record
User Master Record in SAP is a fundamental component that stores and manages information about individual users who access the SAP system
Creation of user accounts in SAP systems is client-dependent, meaning that user master records must be established separately in each client where users need access.
User Master Record in SAP contains a variety of information pertaining to individual users who access the SAP system. This information is crucial for managing user access, permissions, and preferences within the SAP environment. These are the key components typically found in a user master record:
User Details Like Name, Department, function, responsibilities, user group, user type and License
User Details with Validity ,Lock Status, and authentication properties
User Settings Like parameters, spool requests, time zone.
Note : User details, such as user IDs, hashed passwords, authorizations, and related information, are stored in the USR02 table
User Deletion
User deletion is always possible and can be done using the transactions SU01 or SU10. During the deletion, all of the personal data belonging to the user master is deleted
Deletion Effects: Deleting a user account in SAP has several effect such as
The user's access to the SAP system is immediately revoked.
Any active sessions associated with the deleted user account are terminated
Authorization objects and roles assigned to the user are removed.
User-related data stored in tables such as USR02 (User Master Record) is deleted.
After deleting a user account, administrators may need to perform additional tasks, such as reassigning responsibilities to other users, updating documentation, or communicating the deletion to relevant stakeholders
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