How To Fix CNV_20100449 - Error while writing table RFDT for reference number &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 449

• Message text: Error while writing table RFDT for reference number &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100449 - Error while writing table RFDT for reference number &1 ?

  The SAP error message CNV_20100449, which indicates an error while writing to the table RFDT for a reference number, typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error can occur due to various reasons, including data inconsistencies, missing entries, or issues with the migration logic.
  Causes:
  
  Data Inconsistencies: The data being migrated may have inconsistencies or invalid entries that prevent successful writing to the RFDT table.
  Missing Reference Data: The reference number specified may not exist in the source data or may not be properly mapped.
  Technical Issues: There could be technical issues such as database locks, insufficient authorizations, or system performance problems.
  Configuration Issues: Incorrect configuration settings in the migration tool or the source system can lead to this error.
  
  Solutions:
  
  Check Data Consistency: Review the data being migrated for any inconsistencies or invalid entries. Ensure that all required fields are populated correctly.
  Verify Reference Numbers: Ensure that the reference number specified in the error message exists and is correctly mapped in the source data.
  Review Migration Logs: Check the migration logs for additional error messages or warnings that can provide more context about the issue.
  Database Locks: Ensure that there are no database locks that might be preventing the writing process. You can check for locks using transaction codes like SM12.
  Authorization Check: Verify that the user executing the migration has the necessary authorizations to write to the RFDT table.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Test in a Development Environment: If possible, replicate the issue in a development or test environment to troubleshoot without affecting production data.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE37 (Function Modules), and ST22 (Dump Analysis) to investigate further.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into common issues and best practices.
  Community Forums: Check SAP Community forums or other online resources where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the root cause of the CNV_20100449 error and implement a suitable solution.