How To Fix /SAPAPO/PP_OPTIMIZER809 - Starting dual simplex algorithm

/SAPAPO/PP_OPTIMIZER809 - Overview

• Message type: E = Error

• Message class: /SAPAPO/PP_OPTIMIZER -

• Message number: 809

• Message text: Starting dual simplex algorithm

Self-Explanatory Message

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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 /SAPAPO/PP_OPTIMIZER809 - Starting dual simplex algorithm ?

  The SAP error message /SAPAPO/PP_OPTIMIZER809 typically indicates an issue related to the optimization process in SAP Advanced Planning and Optimization (APO). This message is associated with the dual simplex algorithm, which is used for solving linear programming problems in the context of production planning and scheduling.
  
  Cause:
  The error can arise due to several reasons, including but not limited to:
  
  Model Infeasibility: The optimization model may be infeasible, meaning that there are no solutions that satisfy all constraints.
  Data Issues: Incorrect or inconsistent data in the planning model, such as missing or incorrect master data, can lead to problems during optimization.
  Resource Constraints: Over-constrained resources or conflicting constraints can prevent the optimizer from finding a feasible solution.
  Parameter Settings: Incorrect settings in the optimizer configuration can lead to issues during the optimization process.
  
  
  Solution:
  To resolve the error, consider the following steps:
  
  
  Check Model Feasibility:
  
  Review the constraints and ensure that they are not overly restrictive.
  Analyze the input data for