How To Fix /SAPAPO/PDEM251 - Error when reading or evaluating supersession chain &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PDEM -

• Message number: 251

• Message text: Error when reading or evaluating supersession chain &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PDEM251 - Error when reading or evaluating supersession chain &1 ?

  The SAP error message /SAPAPO/PDEM251 typically occurs in the context of Advanced Planning and Optimization (APO) when there is an issue with reading or evaluating a supersession chain for a product. This error can arise due to various reasons, including data inconsistencies, missing entries, or configuration issues.
  Cause:
  
  Missing Supersession Data: The product may not have a defined supersession chain, or the data may be incomplete.
  Data Inconsistencies: There may be inconsistencies in the master data related to the product, such as incorrect or missing entries in the product master or the supersession table.
  Configuration Issues: The configuration settings for the product or the planning area may not be set up correctly, leading to issues in evaluating the supersession chain.
  Authorization Issues: The user may not have the necessary authorizations to access the required data.
  
  Solution:
  
  Check Supersession Data: Verify that the supersession data for the product is correctly maintained. You can do this by checking the product master data in the relevant transaction (e.g., /SAPAPO/MAT1).
  Data Consistency Check: Run consistency checks on the master data to identify any inconsistencies. You can use transaction codes like /SAPAPO/SDP94 or /SAPAPO/SDP81 to analyze the data.
  Review Configuration: Ensure that the configuration settings for the product and planning area are correctly set up. This includes checking the settings for the product hierarchy and the planning strategy.
  Authorization Check: Ensure that the user has the necessary authorizations to access the product data. You may need to consult with your SAP security team to verify this.
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide solutions or workarounds for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/MAT1 for product master data, /SAPAPO/SDP94 for planning book data, and /SAPAPO/SDP81 for data consistency checks.
  Documentation: Review SAP documentation related to product master data and supersession management in APO for a better understanding of how these elements interact.
  SAP Community: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after following these steps, it may be necessary to involve your SAP support team or consult with SAP directly for further assistance.