How To Fix /SAPAPO/PDEM123 - Error when generating step due to supersession (see application log)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PDEM -

• Message number: 123

• Message text: Error when generating step due to supersession (see application log)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PDEM123 - Error when generating step due to supersession (see application log) ?

  The SAP error message /SAPAPO/PDEM123 typically occurs in the context of Advanced Planning and Optimization (APO) when there is an issue related to product supersession during the generation of a planning step. Supersession refers to the process where one product is replaced or phased out in favor of another product. This can lead to complications in planning if not handled correctly.
  Cause:
  The error can arise due to several reasons, including:
  
  
  Incorrect Supersession Setup: The supersession relationships between products may not be correctly defined in the system. This can happen if the new product is not properly linked to the old product.
  
  
  Missing Data: Required data for the new product or the supersession relationship may be missing or incomplete.
  
  
  Planning Object Issues: There may be issues with the planning objects involved, such as incorrect master data or configuration settings.
  
  
  Application Log Errors: The application log may contain specific details about the error, which can provide insights into what went wrong during the planning step generation.
  
  
  Solution:
  To resolve the /SAPAPO/PDEM123 error, you can follow these steps:
  
  
  Check Application Log: Start by reviewing the application log for detailed error messages. This log can provide specific information about what caused the error.
  
  
  Verify Supersession Relationships: Ensure that the supersession relationships are correctly defined in the system. Check the product master data for both the old and new products to confirm that they are linked properly.
  
  
  Complete Missing Data: If any required data is missing, complete it. This may include attributes, planning parameters, or other relevant information for the products involved.
  
  
  Review Planning Object Settings: Check the settings for the planning objects involved in the step generation. Ensure that all necessary configurations are in place.
  
  
  Run Consistency Checks: Use SAP tools to run consistency checks on the master data and planning data to identify and rectify any inconsistencies.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional troubleshooting steps or patches that may be available.
  
  
  Engage SAP Support: If the issue persists after following the above steps, consider reaching out to SAP support for further assistance. Provide them with the details from the application log for more targeted help.
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like /SAPAPO/SDP94 (for planning book) or /SAPAPO/OM17 (for product master) to check the relevant data.
  SAP Notes: Look for SAP Notes related to the error message for any known issues or fixes.
  Documentation: Review the SAP APO documentation for best practices on managing product supersession and planning processes.
  
  By following these steps, you should be able to identify and resolve the issue causing the /SAPAPO/PDEM123 error.