How To Fix /SAPAPO/PP_OPTIMIZER278 - Run time limit reached: No solution found

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PP_OPTIMIZER -

• Message number: 278

• Message text: Run time limit reached: No solution found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PP_OPTIMIZER278 - Run time limit reached: No solution found ?

  The SAP error message /SAPAPO/PP_OPTIMIZER278 Run time limit reached: No solution found typically occurs in the context of the SAP Advanced Planning and Optimization (APO) module, particularly when using the PP/DS (Production Planning and Detailed Scheduling) optimizer. This error indicates that the optimizer has reached its time limit for finding a feasible solution to the planning problem, and as a result, it has not been able to generate a valid plan.
  Causes:
  
  Complexity of the Problem: The planning problem may be too complex, involving a large number of constraints, resources, or products, which can lead to longer computation times.
  Insufficient Runtime Settings: The runtime limit set for the optimizer may be too low for the specific planning scenario.
  Data Issues: Inconsistent or incomplete master data, such as resource capacities, production times, or demand data, can complicate the optimization process.
  Configuration Issues: Incorrect configuration of the optimizer settings or parameters can lead to inefficient planning runs.
  System Performance: Limited system resources (CPU, memory) can affect the performance of the optimizer.
  
  Solutions:
  
  Increase Runtime Limit: Adjust the runtime limit settings in the optimizer profile. This can be done in the transaction /SAPAPO/OPTIMIZER by modifying the relevant profile settings to allow for a longer runtime.
  Simplify the Planning Problem: If possible, reduce the complexity of the planning problem by limiting the number of products, resources, or constraints being considered in the optimization run.
  Check and Clean Data: Ensure that all relevant master data is complete and consistent. Validate resource capacities, production times, and demand data to eliminate any discrepancies.
  Optimize Configuration: Review the configuration settings of the optimizer to ensure they are appropriate for the specific planning scenario. This may involve adjusting parameters related to heuristics, constraints, or priorities.
  Monitor System Performance: Check the system performance and resource utilization during the optimization run. If necessary, consider upgrading hardware or optimizing system settings to improve performance.
  Use Alternative Planning Strategies: If the problem persists, consider using alternative planning strategies or heuristics that may be less computationally intensive.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/OPTIMIZER for optimizer settings and /SAPAPO/MC90 for monitoring the optimizer runs.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on optimizing performance.
  Documentation: Review the SAP documentation for the PP/DS optimizer to understand its capabilities and limitations better.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the error and improve the performance of the optimizer in SAP APO.