How To Fix /SAPAPO/SDP139 - The last free member must not be overwritten

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SDP -

• Message number: 139

• Message text: The last free member must not be overwritten

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SDP139 - The last free member must not be overwritten ?

  The SAP error message /SAPAPO/SDP139 with the description "The last free member must not be overwritten" typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when dealing with planning books and data views.
  Cause:
  This error usually arises when you attempt to overwrite or modify the last free member in a planning book or data view. In SAP APO, free characteristics are used to allow users to enter data freely without being restricted by predefined values. The last free member is a special case because it is often used as a placeholder for additional entries or calculations. Overwriting it can lead to inconsistencies in the planning data.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Planning Book Configuration: Ensure that the planning book and data view are correctly configured. Verify that the last free member is not being inadvertently modified.
  
  
  Avoid Overwriting the Last Free Member: When entering data, make sure that you are not trying to overwrite the last free member. Instead, add new entries or modify existing ones without affecting the last free member.
  
  
  Review User Authorizations: Ensure that the user has the necessary authorizations to modify the planning book. Sometimes, restrictions in user roles can lead to unexpected behavior.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on handling free characteristics and planning books.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance. They may provide insights based on the specific configuration and version of your SAP system.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Training and Documentation: Familiarize yourself with SAP APO training materials and documentation to better understand the concepts of planning books, free characteristics, and data entry.
  
  By following these steps, you should be able to address the error and continue working with your planning books in SAP APO.