How To Fix CNV20201009 - Number range simulation: Memory optimization is switched on

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 009

• Message text: Number range simulation: Memory optimization is switched on

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201009 - Number range simulation: Memory optimization is switched on ?

  The SAP error message CNV20201009 indicates that there is an issue related to the number range simulation in the context of a data migration or conversion process. This specific error message suggests that memory optimization is enabled, which can lead to issues during the simulation of number ranges.
  Cause:
  The error typically arises when the system is trying to perform a number range simulation while memory optimization settings are active. This can lead to insufficient memory allocation for the simulation process, causing it to fail.
  Solution:
  To resolve this issue, you can try the following steps:
  
  
  Disable Memory Optimization:
  
  Go to the relevant configuration settings in your SAP system.
  Look for the option related to memory optimization for number range simulations.
  Disable this option to allow the simulation to run without memory constraints.
  
  
  
  Increase Memory Allocation:
  
  If disabling memory optimization is not feasible or does not resolve the issue, consider increasing the memory allocation for the SAP system.
  This can be done by adjusting the instance profile parameters in the SAP system configuration.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates. Sometimes, issues like these are resolved in newer versions or patches.
  
  
  
  Review Logs:
  
  Check the application logs (transaction SLG1) for any additional error messages or warnings that might provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to the SAP Notes or documentation related to the specific transaction or process you are working with. There may be specific recommendations or known issues documented.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They may have additional insights or solutions based on your specific system configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE37 (Function Modules), and SLG1 (Application Log) for troubleshooting.
  SAP Notes: Search for SAP Notes related to number range management and memory optimization for more detailed guidance.
  Performance Tuning: Consider reviewing general performance tuning practices for your SAP system to ensure optimal operation during data migration processes.
  
  By following these steps, you should be able to address the CNV20201009 error and successfully perform the number range simulation.