How To Fix CNV20410055 - Source field &1 without field mapping, target field has mapping assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20410 - message class for package 20410 (operating concern merge)

• Message number: 055

• Message text: Source field &1 without field mapping, target field has mapping assigned

What causes this issue?

Source table field &V1& has no field mapping.
The target table has the same field &V2&. However this target field has
already a mapping assigned.
As a consequence the contents of source table field gets lost.

System Response

Warning

How to fix this error?

Check the field mapping settings.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20410055 - Source field &1 without field mapping, target field has mapping assigned ?

  The SAP error message CNV20410055 indicates that there is a mismatch in the field mapping during a data migration or conversion process. Specifically, it means that a source field (denoted as &1) does not have a corresponding field mapping defined, while the target field has a mapping assigned. This situation typically arises in the context of data migration projects, especially when using tools like SAP's Data Migration Workbench or similar conversion tools.
  Cause:
  
  Missing Mapping: The source field is not mapped to any target field, which means that the data from this source field will not be transferred to the target system.
  Configuration Issues: There may be a configuration issue in the mapping settings where the source field was not included in the mapping process.
  Data Model Changes: Changes in the data model between the source and target systems may lead to certain fields being omitted from the mapping.
  Incorrect Migration Template: The migration template may not have been set up correctly, leading to missing mappings.
  
  Solution:
  
  
  Check Mapping Configuration:
  
  Go to the mapping configuration in the data migration tool.
  Ensure that the source field (&1) is included in the mapping and is correctly mapped to the appropriate target field.
  
  
  
  Add Missing Mapping:
  
  If the source field is indeed required for the migration, create a mapping for it to the corresponding target field.
  If the source field is not needed, you may need to remove or adjust the target field mapping accordingly.
  
  
  
  Review Migration Template:
  
  Check the migration template to ensure that all necessary fields are included and correctly configured.
  Update the template if necessary to include the missing mappings.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or guides related to the specific migration tool you are using for additional insights on how to handle field mappings.
  
  
  
  Testing:
  
  After making changes, perform a test migration to ensure that the mappings are now correctly set up and that the error does not occur.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on field mapping issues.
  Data Migration Workbench: Familiarize yourself with the Data Migration Workbench or the specific tool you are using, as it may have specific features or settings that can help resolve mapping issues.
  Field Mapping Documentation: Review any documentation related to field mapping for your specific SAP modules to understand the relationships between source and target fields.
  
  By following these steps, you should be able to resolve the CNV20410055 error and ensure that your data migration process runs smoothly.