How To Fix CN138 - Specified assignment to WBS element does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 138

• Message text: Specified assignment to WBS element does not exist

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 CN138 - Specified assignment to WBS element does not exist ?

  The SAP error message CN138 ("Specified assignment to WBS element does not exist") typically occurs when there is an attempt to assign a transaction or cost to a Work Breakdown Structure (WBS) element that is not valid or does not exist in the system. This can happen in various scenarios, such as when trying to post costs, create a project, or perform other project-related activities.
  Causes:
  
  Invalid WBS Element: The WBS element you are trying to use may not exist in the system or may have been deleted.
  Incorrect Project Structure: The WBS element may not be correctly structured or may not be assigned to the correct project.
  Authorization Issues: The user may not have the necessary authorizations to access or use the specified WBS element.
  Inactive WBS Element: The WBS element may be inactive or not available for the current period.
  Data Entry Errors: There may be typographical errors in the WBS element code being used.
  
  Solutions:
  
  Verify WBS Element: Check if the WBS element exists in the system. You can do this by navigating to the project structure in SAP and confirming the WBS element's validity.
  Check Project Assignment: Ensure that the WBS element is correctly assigned to the relevant project and that the project is active.
  Review Authorizations: Ensure that the user has the necessary permissions to access and use the WBS element.
  Check Status: Verify that the WBS element is active and available for the current fiscal year or period.
  Correct Data Entry: Double-check the WBS element code for any typographical errors or discrepancies.
  Consult Documentation: If the issue persists, refer to SAP documentation or consult with your SAP support team for further assistance.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like CJ20N (Project Builder) or CJ03 (Display WBS) to view and manage WBS elements.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to WBS elements and error CN138.
  Project Management: Understanding the project management module in SAP can help in better managing WBS elements and their assignments.
  
  If the problem continues after checking these aspects, it may be beneficial to involve your SAP support team or consult with an SAP expert for a deeper investigation.