How To Fix /IWNGW/CM_HUB137 - Special Characters not allowed in the field SAP System Alias

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 137

• Message text: Special Characters not allowed in the field SAP System Alias

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 /IWNGW/CM_HUB137 - Special Characters not allowed in the field SAP System Alias ?

  The SAP error message /IWNGW/CM_HUB137 Special Characters not allowed in the field SAP System Alias typically occurs when you are trying to enter a system alias that contains special characters that are not permitted by the SAP system. This can happen in various contexts, such as when configuring system connections or setting up system aliases in the SAP Gateway or other related components.
  Cause:
  The error is caused by the inclusion of special characters in the SAP System Alias field. SAP has specific rules regarding the characters that can be used in system aliases, and these rules generally restrict the use of special characters to ensure compatibility and avoid issues in system communication.
  Solution:
  To resolve this error, you should:
  
  
  Check the Alias Name: Review the system alias you are trying to enter. Ensure that it only contains valid characters. Typically, valid characters include:
  
  Alphanumeric characters (A-Z, a-z, 0-9)
  Underscores (_)
  Dashes (-)
  
  
  
  Remove Special Characters: If your alias contains any special characters (e.g., @, #, $, %, &, *, etc.), remove them and replace them with valid characters.
  
  
  Follow Naming Conventions: Adhere to any specific naming conventions or guidelines provided by your organization or SAP documentation for system aliases.
  
  
  Test the Changes: After making the necessary changes to the alias, try saving or submitting the configuration again to see if the error persists.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions and restrictions for system aliases.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions related to this error message.
  System Configuration: Ensure that you are following the correct procedures for configuring system aliases in the specific SAP module you are working with (e.g., SAP Gateway, SAP PI/PO, etc.).
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.