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

/SAPAPO/PDEM251 - Overview

• 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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/SAPAPO/PDEM251 - Details

• 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