How To Fix /IWBEP/CM_MGW_UM069 - Unable to read external user name

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_UM -

• Message number: 069

• Message text: Unable to read external user name

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_UM069 - Unable to read external user name ?

  The SAP error message /IWBEP/CM_MGW_UM069 Unable to read external user name typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to retrieve the external user name, which is often required for authentication or authorization purposes.
  Causes:
  
  Missing User Mapping: The external user name may not be properly mapped to an internal SAP user.
  Authorization Issues: The user may not have the necessary authorizations to access the required resources.
  Configuration Issues: There may be misconfigurations in the SAP Gateway settings or the OData service.
  Network Issues: Problems with the network or connectivity to the identity provider (if using an external authentication mechanism).
  User Not Found: The user attempting to access the service may not exist in the system.
  
  Solutions:
  
  
  Check User Mapping:
  
  Ensure that the external user is correctly mapped to an internal SAP user. This can be done in transaction SU01 or SU10 for user management.
  
  
  
  Review Authorizations:
  
  Verify that the user has the necessary authorizations to access the OData service. Check the roles assigned to the user in transaction PFCG.
  
  
  
  Configuration Review:
  
  Check the configuration of the SAP Gateway and the OData service. Ensure that the service is properly registered and activated in transaction /IWFND/MAINT_SERVICE.
  Review the settings in transaction /IWFND/GW_CLIENT to test the service and see if the issue persists.
  
  
  
  Check Network Connectivity:
  
  If using an external identity provider, ensure that there are no network issues preventing the SAP system from reaching the identity provider.
  
  
  
  User Existence:
  
  Confirm that the user exists in the SAP system. You can check this in transaction SU01 by entering the user ID.
  
  
  
  Check Logs:
  
  Review the system logs for any additional error messages that may provide more context. Use transaction SLG1 to check application logs related to the Gateway.
  
  
  
  Update SAP Notes:
  
  Check for any relevant SAP Notes that may address this issue. Sometimes, specific patches or updates may resolve known issues.
  
  
  
  Related Information:
  
  SAP Gateway: This is a technology that allows you to connect devices, environments, and applications to SAP systems.
  OData Services: These are RESTful services that allow for CRUD operations on SAP data.
  User Management: Understanding how users are managed in SAP is crucial for troubleshooting authentication and authorization issues.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the steps you have already taken.