How To Fix KI529 - Iteration convergence is extremely slow in the loop displayed

SAP Error Message - Details

• Message type: E = Error

• Message class: KI -

• Message number: 529

• Message text: Iteration convergence is extremely slow in the loop displayed

What causes this issue?

The SAP System could find no loop that caused termination. In the
iteration relationships, however, is a loop in which values to be
iterated are allocated for a long time in circles. The iteration thus
converges very slowly.

System Response

The iteration may terminate after a certain number of iteration steps
due to the slowness of the convergence.

How to fix this error?

If iteration terminates you have the following options.
Rework the sender-receiver relationships.
Let the iteration run in the background with more iteration steps
allowed.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KI529 - Iteration convergence is extremely slow in the loop displayed ?

  The SAP error message KI529, which indicates that "Iteration convergence is extremely slow in the loop displayed," typically occurs in the context of cost planning or cost allocation processes within SAP Controlling (CO). This error suggests that the system is having difficulty converging on a solution during iterative calculations, which can happen for several reasons.
  Causes:
  
  Complexity of the Model: The cost allocation model may be too complex, with many interdependencies that make it difficult for the system to find a solution.
  Data Issues: There may be issues with the data being used in the calculations, such as missing or incorrect entries, which can lead to slow convergence.
  High Volume of Data: A large volume of data or a high number of cost centers can slow down the iteration process.
  Configuration Issues: Incorrect configuration settings in the cost planning or allocation process can lead to inefficiencies in the calculations.
  Circular References: If there are circular references in the cost allocation model, it can cause the system to struggle to find a solution.
  
  Solutions:
  
  Simplify the Model: Review the cost allocation model and try to simplify it by reducing the number of interdependencies or breaking it into smaller, more manageable parts.
  Check Data Integrity: Ensure that all relevant data is complete and accurate. Look for missing values, incorrect entries, or inconsistencies in the data.
  Optimize Configuration: Review the configuration settings in the SAP system related to cost planning and allocation. Make sure they are set up correctly and efficiently.
  Reduce Data Volume: If possible, reduce the volume of data being processed in a single iteration. This can be done by filtering out unnecessary data or processing in smaller batches.
  Identify Circular References: Check for any circular references in the cost allocation model and resolve them to allow for smoother calculations.
  Increase Iteration Limits: In some cases, increasing the maximum number of iterations allowed in the system settings may help, but this should be done with caution as it may only mask the underlying issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KSV5 (for cost center planning) or KSV1 (for planning versions) to analyze and adjust your cost planning settings.
  SAP Notes: Check for any SAP Notes related to the KI529 error message, as SAP may provide specific patches or recommendations for known issues.
  Performance Monitoring: Use performance monitoring tools within SAP to identify bottlenecks in the cost allocation process.
  Consult Documentation: Review SAP documentation and best practices for cost planning and allocation to ensure compliance with recommended procedures.
  
  If the issue persists after trying these solutions, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.