How To Fix /SAPAPO/RRP_CDOC018 - Iteration limit of &1 has been reached

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RRP_CDOC -

• Message number: 018

• Message text: Iteration limit of &1 has been reached

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RRP_CDOC018 - Iteration limit of &1 has been reached ?

  The SAP error message /SAPAPO/RRP_CDOC018 Iteration limit of &1 has been reached typically occurs in the context of Advanced Planning and Optimization (APO) when the system is unable to converge on a solution within the defined iteration limit during the planning run. This can happen in various scenarios, such as during the planning of production, distribution, or other supply chain processes.
  Cause:
  
  Complexity of the Model: The planning model may be too complex, leading to difficulties in finding a feasible solution within the set iteration limit.
  Inadequate Data: Missing or incorrect master data, such as product, location, or resource data, can lead to convergence issues.
  Configuration Issues: Incorrect settings in the planning parameters or heuristics can cause the optimizer to struggle to find a solution.
  High Demand Variability: Significant fluctuations in demand or supply can lead to challenges in meeting the planning objectives.
  Resource Constraints: If there are too many constraints (e.g., capacity, lead times) that the optimizer must satisfy, it may lead to a situation where it cannot find a feasible solution.
  
  Solution:
  
  Increase Iteration Limit: You can increase the iteration limit in the planning settings. This can be done in the configuration settings of the APO system, but it should be done with caution as it may lead to longer planning times.
  Review and Clean Data: Ensure that all relevant master data is complete and accurate. Check for any inconsistencies or missing data that could affect the planning process.
  Adjust Planning Parameters: Review the planning parameters and heuristics used in the planning run. Adjust them to simplify the model or reduce the number of constraints.
  Analyze Demand and Supply Patterns: Look for patterns in demand and supply that may be causing the issue. Consider smoothing out demand or adjusting supply strategies.
  Run Smaller Planning Runs: If possible, break down the planning run into smaller segments to reduce complexity and allow for easier convergence.
  Consult SAP Notes: Check for any relevant SAP Notes or updates that may address known issues related to this error message.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like /SAPAPO/RRP3 for planning board or /SAPAPO/SDP94 for the interactive planning to analyze the data and settings.
  SAP Help Documentation: Refer to the official SAP documentation for APO for detailed information on planning settings and optimization techniques.
  Performance Monitoring: Use transaction codes like /SAPAPO/OM to monitor the performance of the planning runs and identify bottlenecks.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support or consult with an SAP APO expert for further analysis and troubleshooting.