How To Fix WI204 - Do not use special characters in user name

SAP Error Message - Details

• Message type: E = Error

• Message class: WI - BPT Workflow: Messages from Info System

• Message number: 204

• Message text: Do not use special characters in 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 WI204 - Do not use special characters in user name ?

  Certainly! Here's detailed information about the SAP error message WI204: "Do not use special characters in user name":
  
  Error Message
  WI204: Do not use special characters in user name
  
  Cause
  This error occurs when a user tries to create or modify a user name in SAP that contains special characters which are not allowed. SAP user names must adhere to certain naming conventions and typically can only include:
  
  Alphanumeric characters (A-Z, a-z, 0-9)
  Some allowed special characters like underscore (_) or period (.) depending on system settings
  
  Special characters such as @, #, $, %, &, *, spaces, or other non-alphanumeric symbols are generally prohibited because they can cause issues with system processing, security, or integration with other systems.
  
  Solution
  
  Remove special characters: Ensure the user name contains only allowed characters. Typically, use only letters, numbers, and possibly underscores or periods.
  Follow naming conventions: Check your organization's user naming policy or SAP system guidelines.
  Check system settings: In some cases, the allowed characters can be configured in the system profile parameters or user management settings, but this is rarely changed due to security and compatibility reasons.
  Use SAP standard tools: When creating users, use transaction codes like SU01 and follow the prompts and validations.
  
  
  Related Information
  
  Transaction Code: SU01 (User Maintenance)
  SAP Notes: There might be SAP Notes related to user naming conventions or specific system restrictions.
  Security Considerations: Restricting special characters helps prevent injection attacks or errors in interfacing systems.
  User Naming Conventions: Often organizations define a standard format for user names (e.g., first initial + last name, employee ID, etc.) to maintain consistency and avoid errors.
  
  
  Summary
  
  Cause: User name contains disallowed special characters.
  Fix: Use only allowed characters (letters, numbers, underscore, period).
  Check: SAP user creation guidelines and organizational policies.
  
  
  If you need help with a specific user name or system configuration, please provide more details!