How To Fix CNV20200642 - Buffer overflow during generation. Contact SAP

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 642

• Message text: Buffer overflow during generation. Contact SAP

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20200642 - Buffer overflow during generation. Contact SAP ?

  The SAP error message CNV20200642: Buffer overflow during generation. Contact SAP typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system has encountered a buffer overflow, which means that the data being processed exceeds the allocated memory space for that operation.
  Causes:
  
  Large Data Volume: The most common cause is that the dataset being processed is too large for the buffer allocated by the system.
  Inefficient Data Structure: The structure of the data being migrated may not be optimized, leading to excessive memory usage.
  Configuration Issues: Incorrect configuration settings in the migration tool or the underlying system can lead to buffer overflow.
  System Limitations: The underlying hardware or system configuration may not have sufficient resources (memory, CPU) to handle the operation.
  
  Solutions:
  
  Reduce Data Volume: If possible, try to reduce the size of the dataset being processed. This can be done by filtering out unnecessary records or splitting the data into smaller batches.
  Optimize Data Structure: Review the data structure and ensure that it is optimized for migration. This may involve simplifying complex data relationships or reducing the number of fields being processed.
  Increase Buffer Size: If you have access to system settings, consider increasing the buffer size allocated for the migration process. This may require adjustments in the system configuration.
  Check Configuration: Review the configuration settings of the migration tool to ensure they are set correctly. Consult the documentation for any specific parameters that may need adjustment.
  System Resources: Ensure that the system has adequate resources (memory, CPU) to handle the migration process. If necessary, consider upgrading the hardware or optimizing the system performance.
  Contact SAP Support: If the issue persists after trying the above solutions, it is advisable to contact SAP Support for further assistance. Provide them with detailed information about the error, including logs and the context in which it occurred.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for data migration.
  Documentation: Review the official SAP documentation for the migration tool you are using, as it may contain specific recommendations for handling large datasets.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to address the buffer overflow error and successfully complete your data migration process.