How To Fix CNV_20200_CHECK407 - The existing mapping seems no longer to be valid. See longtext!

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20200_CHECK - Messages for check functions (company code merge)

• Message number: 407

• Message text: The existing mapping seems no longer to be valid. See longtext!

What causes this issue?

The cash journal business transaction mapping is automatically generated
based on a given company code (merge) mapping.
It was determined that the existing cash journal business transaction
mapping is no longer valid according to the current existing company
code mapping.
It seems that a change in the company code mapping or a change in the
existing cash journal business transaction customizing (transaction
FBCJC2) was done.

System Response

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

How to fix this error?

Re-execute activity <ZK>Check Whether Merge Affects Cash Journal
Business Transact.</> and check the mapping values for the cash journal
business transactions.

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_20200_CHECK407 - The existing mapping seems no longer to be valid. See longtext! ?

  The SAP error message CNV_20200_CHECK407 indicates that there is an issue with the mapping configuration in a data migration or conversion process. This error typically arises during the execution of a data migration project, particularly when using SAP's Conversion Tools or the SAP S/4HANA Migration Cockpit.
  Cause:
  
  Invalid Mapping: The mapping between source and target data structures may have been altered or is no longer valid. This can happen if there have been changes in the data model, such as changes in field names, data types, or structures in the source or target systems.
  Configuration Issues: The mapping configuration might not have been set up correctly, or there may be missing entries in the mapping tables.
  Data Integrity Issues: The data in the source system may not conform to the expected format or constraints defined in the target system, leading to mapping failures.
  
  Solution:
  
  Review Mapping Configuration: Check the mapping configuration in the migration tool. Ensure that all mappings are correctly defined and that there are no discrepancies between the source and target structures.
  Update Mappings: If there have been changes in the data model, update the mappings accordingly. This may involve modifying existing mappings or creating new ones to accommodate changes.
  Check Data Consistency: Validate the data in the source system to ensure it meets the requirements of the target system. Look for any inconsistencies or data integrity issues that may affect the mapping.
  Consult Long Text: The error message suggests checking the long text for more details. Use transaction codes like SE91 to view the long text associated with the error message, which may provide additional context or specific instructions.
  Run Consistency Checks: Use any available consistency check tools provided by SAP to identify and resolve issues in the mapping configuration.
  Documentation and Support: Refer to SAP documentation related to the specific migration tool you are using. If the issue persists, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific conversion tool you are using for best practices and troubleshooting steps.
  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 identify the root cause of the error and implement a solution to resolve it.