How To Fix /IWBEP/CM_MGW_URM027 - UserName contains invalid characters

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_URM -

• Message number: 027

• Message text: UserName contains invalid characters

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_URM027 - UserName contains invalid characters ?

  The SAP error message /IWBEP/CM_MGW_URM027 UserName contains invalid characters typically occurs in the context of SAP Gateway or OData services when a username provided in a request contains characters that are not allowed or recognized by the system. This can happen during authentication or when making service calls that require user credentials.
  Cause:
  
  Invalid Characters: The username may contain special characters, spaces, or symbols that are not permitted by the SAP system.
  Encoding Issues: If the username is being passed through a URL or an API, it may not be properly encoded, leading to invalid characters being interpreted.
  Configuration Issues: There may be settings in the SAP system that restrict the format of usernames.
  
  Solution:
  
  
  Check Username: Ensure that the username being used adheres to the allowed character set. Typically, usernames should consist of alphanumeric characters and may include underscores or hyphens, but should not contain spaces or special characters.
  
  
  URL Encoding: If the username is being passed in a URL, ensure that it is properly URL-encoded. For example, spaces should be replaced with %20, and other special characters should be encoded as per URL encoding standards.
  
  
  Review User Configuration: Check the user configuration in the SAP system to ensure that the username is set up correctly and does not contain invalid characters.
  
  
  SAP Notes and Documentation: Look for any relevant SAP Notes or documentation that may provide additional context or updates regarding this error. Sometimes, there may be patches or updates that address specific issues related to user authentication.
  
  
  Testing with Different Usernames: If possible, test with different usernames that are known to be valid to see if the issue persists. This can help isolate whether the problem is with a specific username or a broader configuration issue.
  
  
  Consult SAP Support: If the issue continues after checking the above points, consider reaching out to SAP support for further assistance. They may have additional insights or solutions based on the specific version and configuration of your SAP system.
  
  
  Related Information:
  
  SAP Gateway: This error is often encountered in the context of SAP Gateway services, which facilitate communication between SAP systems and external applications.
  OData Services: If you are working with OData services, ensure that the service definitions and configurations are correct and that the authentication methods are properly set up.
  User Management: Familiarize yourself with user management in SAP, including transaction codes like SU01 (User Maintenance) to check user details and roles.
  
  By following these steps, you should be able to identify and resolve the issue related to the invalid username characters in your SAP environment.