How To Fix CNV20332019 - New derivation. Existing mapping will be overwritten

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20332 - Message class for package 20332 (OBJID_AO)

• Message number: 019

• Message text: New derivation. Existing mapping will be overwritten

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20332019 - New derivation. Existing mapping will be overwritten ?

  The SAP error message CNV20332019 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This message indicates that a new derivation is being created, and it will overwrite an existing mapping. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Duplicate Mapping: The error arises when there is an attempt to create a new mapping for a data field that already has an existing mapping in the system. This can happen if the same source data is being mapped to a target field more than once.
  Configuration Issues: There may be issues in the configuration of the migration project, where the same source and target fields are defined multiple times.
  Data Model Changes: Changes in the data model or structure during the migration process can lead to conflicts in mappings.
  
  Solution:
  
  Review Existing Mappings: Check the existing mappings in the migration cockpit or the relevant configuration area. Identify if the mapping you are trying to create already exists.
  Modify or Delete Existing Mapping: If the existing mapping is no longer needed, consider deleting it. If it is still required, you may need to modify your new mapping to avoid conflicts.
  Use Unique Identifiers: Ensure that each mapping has a unique identifier to prevent overwriting. This may involve adjusting the source or target fields to ensure they are distinct.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or best practices for handling mappings.
  Testing: After making changes, conduct thorough testing to ensure that the new mappings work as intended without causing further issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling mappings during migration.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into best practices for mapping and data migration.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  
  By following these steps, you should be able to resolve the CNV20332019 error and successfully manage your data mappings during the migration process.