How To Fix PAK158 - Function group &1 has an invalid name

SAP Error Message - Details

• Message type: E = Error

• Message class: PAK - Package API / Package Tools

• Message number: 158

• Message text: Function group &1 has an invalid 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 PAK158 - Function group &1 has an invalid name ?

  The SAP error message PAK158 indicates that there is an issue with the naming convention of a function group in the SAP system. This error typically arises when the function group name does not adhere to the naming standards set by SAP.
  Cause:
  
  Invalid Characters: The function group name may contain invalid characters or symbols that are not allowed.
  Naming Convention: The name may not follow the required naming conventions, such as length restrictions or starting with a specific character.
  Reserved Names: The name might be a reserved keyword or already in use by another function group.
  Typographical Errors: There could be a typographical error in the name being used.
  
  Solution:
  
  
  Check Naming Conventions: Ensure that the function group name follows SAP's naming conventions:
  
  It should start with a letter.
  It can contain letters, numbers, and underscores.
  It should not exceed the maximum length (typically 30 characters).
  
  
  
  Use Valid Characters: Make sure that the name does not include any special characters or spaces.
  
  
  Rename the Function Group: If the name is invalid, consider renaming the function group to a valid name that adheres to the conventions.
  
  
  Check for Existing Function Groups: Verify that the name you are trying to use is not already taken by another function group.
  
  
  Consult Documentation: Refer to SAP documentation or guidelines for naming conventions to ensure compliance.
  
  
  Use Transaction SE80: You can use transaction SE80 (Object Navigator) to create or modify function groups and check for naming issues.
  
  
  Related Information:
  
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for various objects, including function groups, to avoid similar issues in the future.
  SAP Notes: Check SAP Notes for any specific updates or patches related to function groups and naming conventions.
  Development Guidelines: Follow best practices and guidelines for development in SAP to ensure that all objects are named correctly and consistently.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance.