How To Fix CNV20201400 - Error during data transmission

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 400

• Message text: Error during data transmission

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 CNV20201400 - Error during data transmission ?

  The SAP error message CNV20201400, which indicates "Error during data transmission," typically occurs during data migration or data transfer processes, particularly when using SAP's data migration tools or during system conversions. This error can arise due to various reasons, including network issues, configuration problems, or data inconsistencies.
  Causes:
  
  Network Issues: Temporary network disruptions can lead to data transmission errors.
  Configuration Errors: Incorrect settings in the data migration tool or in the source/target systems can cause failures.
  Data Inconsistencies: Issues with the data being transferred, such as missing mandatory fields or data format mismatches.
  Timeouts: Long-running processes may exceed timeout settings, leading to transmission errors.
  Authorization Issues: Insufficient permissions for the user or service account performing the data transfer.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the source and target systems. You can use tools like ping or traceroute to diagnose connectivity.
  Review Configuration Settings: Verify that all configuration settings in the data migration tool are correct. This includes source and target system settings, mapping configurations, and any transformation rules.
  Validate Data: Check the data being transferred for completeness and correctness. Ensure that all mandatory fields are populated and that data types match the expected formats.
  Increase Timeout Settings: If the process is timing out, consider increasing the timeout settings in the relevant configuration.
  Check Authorizations: Ensure that the user or service account has the necessary permissions to perform the data transfer.
  Review Logs: Check the logs generated during the data transfer process for more detailed error messages that can provide insights into the specific cause of the failure.
  Retry the Process: Sometimes, simply retrying the data transfer can resolve transient issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the official SAP documentation for the data migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) for best practices and troubleshooting tips.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.