How To Fix /IBS/RB121 - User could not be determined

SAP Error Message - Details

• Message type: E = Error

• Message class: /IBS/RB -

• Message number: 121

• Message text: User could not be determined

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IBS/RB121 - User could not be determined ?

  The SAP error message /IBS/RB121 User could not be determined typically occurs in the context of SAP Integrated Business Solutions (IBS) or when dealing with user authorizations and roles. This error indicates that the system is unable to identify or determine the user associated with a particular transaction or process.
  Causes:
  
  Missing User Assignment: The user may not be assigned to the relevant organizational unit or may not have the necessary roles assigned in the system.
  Authorization Issues: The user may lack the required authorizations to perform the action or access the data.
  Incorrect User Configuration: There may be issues with the user master data, such as missing or incorrect entries.
  Session Issues: Sometimes, session-related problems can lead to the system not recognizing the user.
  Technical Issues: There could be underlying technical issues, such as problems with the user interface or backend processing.
  
  Solutions:
  
  
  Check User Assignment:
  
  Verify that the user is correctly assigned to the relevant organizational units and has the necessary roles.
  Use transaction code SU01 to check the user master data and ensure that the user is active and properly configured.
  
  
  
  Review Authorizations:
  
  Use transaction code SU53 to analyze the authorization check after the error occurs. This will help identify any missing authorizations.
  If necessary, adjust the user roles or request additional authorizations from your security team.
  
  
  
  User Master Data:
  
  Ensure that the user master data is complete and accurate. Check for any missing fields or incorrect entries.
  If the user is new, ensure that all necessary configurations have been completed.
  
  
  
  Session Management:
  
  Log out and log back into the SAP system to refresh the session.
  Clear any cache or temporary data that might be causing issues.
  
  
  
  Consult Technical Support:
  
  If the issue persists, consult your SAP Basis team or technical support for further investigation. They may need to check system logs or perform additional troubleshooting.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SU01 (User Maintenance), SU53 (Display Authorization Check), and PFCG (Role Maintenance).
  Documentation: Refer to SAP documentation or help resources for more detailed information on user management and authorization concepts.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.