How To Fix CNV_20100459 - Table &1, field &2: Conversion routine was changed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 459

• Message text: Table &1, field &2: Conversion routine was changed

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The initial conversion routine was changed to &V3&.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100459 - Table &1, field &2: Conversion routine was changed ?

  The SAP error message CNV_20100459 typically indicates that there is an issue with the conversion routine for a specific field in a table during a data migration or conversion process. This error is often encountered in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Cause:
  The error message "Conversion routine was changed" suggests that the conversion routine for the specified field in the specified table has been modified or is not compatible with the data being processed. This can happen due to:
  
  Changes in Data Structure: The underlying data structure or the definition of the field has been altered, which may include changes in data types, lengths, or formats.
  Custom Development: If there are custom conversion routines or enhancements that have been implemented, they may not align with the current data or the expected format.
  Version Upgrades: Upgrading to a new version of SAP can sometimes lead to changes in standard conversion routines.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  Check the Conversion Routine: Review the conversion routine for the specified field in the table. Ensure that it is correctly defined and compatible with the data being processed.
  Data Consistency: Verify that the data being migrated or converted is consistent with the expected format of the conversion routine. This may involve cleaning or transforming the data before migration.
  Review Changes: If there have been recent changes to the data model or conversion routines, assess those changes to determine if they are causing the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or updates that address this issue.
  Debugging: If you have access to the development environment, you can debug the conversion routine to identify where the failure occurs and make necessary adjustments.
  SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They may provide insights or patches that can resolve the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on handling conversion routines.
  Migration Tools: Familiarize yourself with the specific migration tools you are using, as they may have their own set of guidelines and best practices.
  Testing: Always perform thorough testing in a development or quality assurance environment before applying changes to production systems.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.