How To Fix CNV20410045 - Field mapping of source table &1: Mapping onto target field &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 045

• Message text: Field mapping of source table &1: Mapping onto target field &2

What causes this issue?

Field mapping of source table &V1&:
There is a field mapping for target field &V2&.
Selected fields (fixed characteristics, fixed basic key figures,
technical fields, fixed units) are not allowed to be mapped.

System Response

Error

How to fix this error?

Remove the field mapping for target field &V2& in the table mapping of
source table &V1&.

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 CNV20410045 - Field mapping of source table &1: Mapping onto target field &2 ?

  The SAP error message CNV20410045 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the field mapping between the source table and the target field in the migration process.
  Cause:
  The error message CNV20410045 is triggered when:
  
  
  Field Mapping Issues: The source field from the source table cannot be mapped correctly to the target field in the target table. This could be due to:
  
  Data type mismatches (e.g., trying to map a character field to a numeric field).
  Missing fields in the target structure.
  Incorrect field names or configurations in the mapping settings.
  
  
  
  Data Quality Issues: The data in the source table may not meet the requirements of the target field, such as:
  
  Invalid values that cannot be converted.
  Length restrictions being violated.
  
  
  
  Configuration Errors: There may be issues in the configuration of the migration project, such as incorrect settings in the mapping templates.
  
  
  Solution:
  To resolve the CNV20410045 error, you can take the following steps:
  
  
  Check Field Mapping:
  
  Review the mapping configuration in the migration tool to ensure that the source fields are correctly mapped to the target fields.
  Ensure that the data types of the source and target fields are compatible.
  
  
  
  Validate Data:
  
  Check the data in the source table for any inconsistencies or invalid values that may cause mapping issues.
  Cleanse the data if necessary to ensure it meets the target field requirements.
  
  
  
  Adjust Mapping Settings:
  
  If you are using a mapping template, ensure that it is correctly configured and that all necessary fields are included.
  If needed, modify the mapping to accommodate any changes in the data structure.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific migration tool you are using to understand the expected field mappings and any constraints.
  
  
  
  Testing:
  
  After making adjustments, perform a test migration with a small subset of data to verify that the issue has been resolved.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide further assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for detailed instructions on field mapping and data migration.
  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 and resolve the cause of the CNV20410045 error in your SAP migration process.