How To Fix GA738 - Iteration terminated with divergence

SAP Error Message - Details

• Message type: E = Error

• Message class: GA - Allocations

• Message number: 738

• Message text: Iteration terminated with divergence

What causes this issue?

The iteration in cycle &V1&, start date &V2&, has not converged for
period(s) &V3&.

System Response

The results cannot be processed any further due to the incorrect
iteration. The results are not posted.

How to fix this error?

The values computed up to the program termination are displayed in the
list display. You may be able to discern a loop in the cycle from these
figures.
A error could have also arisen if you were working with unscaled
allocation bases, and if these bases are both positive and negative for
a sender. Activate the corresponding indicator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GA738 - Iteration terminated with divergence ?

  The SAP error message GA738, "Iteration terminated with divergence," typically occurs in the context of the SAP system's optimization or planning functions, particularly in the areas of production planning, material requirements planning, or similar processes. This error indicates that the iterative algorithm used to solve a problem has failed to converge to a solution, often due to issues with the input data or model configuration.
  Causes:
  
  Inconsistent Data: The input data may contain inconsistencies, such as incorrect or missing values, which can lead to divergence during calculations.
  Model Configuration Issues: The configuration of the planning model may not be set up correctly, leading to unrealistic constraints or objectives.
  Parameter Settings: Incorrect parameter settings for the optimization algorithm can cause it to behave unexpectedly.
  Resource Constraints: If the model has overly restrictive resource constraints, it may lead to infeasibility, causing the algorithm to diverge.
  Numerical Instability: Sometimes, numerical issues can arise due to the scale of the data or the nature of the calculations being performed.
  
  Solutions:
  
  Check Input Data: Review the input data for any inconsistencies or missing values. Ensure that all necessary data is correctly entered and formatted.
  Review Model Configuration: Verify that the planning model is configured correctly. Check constraints, objectives, and other settings to ensure they are realistic and achievable.
  Adjust Parameters: If applicable, adjust the parameters of the optimization algorithm. This may involve changing settings related to convergence criteria or iteration limits.
  Simplify the Model: If the model is complex, consider simplifying it to identify the source of the divergence. This can involve reducing the number of variables or constraints temporarily.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the module you are working with. There may be known issues or additional troubleshooting steps.
  Run Diagnostics: Use any available diagnostic tools within SAP to analyze the problem further. This may help identify specific areas causing the divergence.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to the GA738 error. SAP frequently updates its knowledge base with solutions and workarounds for common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can share their solutions.
  Training and Documentation: Ensure that users involved in the planning process are adequately trained and have access to relevant documentation to minimize errors in data entry and model setup.
  
  By systematically addressing the potential causes and applying the suggested solutions, you should be able to resolve the GA738 error and achieve successful iterations in your SAP processes.