How To Fix CNV_20700089 - Material &1 (to be converted) is already mapped to another value

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20700 - Material number conversion

• Message number: 089

• Message text: Material &1 (to be converted) is already mapped to another value

What causes this issue?

Two material number records maintained with the same old material number
in mapping.
For example: A -> B and A -> C maintained in mapping
This scenario is not supported by this Package.

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

System Response

How to fix this error?

Correct the mapping and check again.

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_20700089 - Material &1 (to be converted) is already mapped to another value ?

  The SAP error message CNV_20700089 indicates that during a data conversion or migration process, a material (identified by &1) is already mapped to another value. This typically occurs in scenarios where you are using SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other conversion tools, and it suggests that there is a conflict in the mapping of materials.
  Cause:
  
  Duplicate Mapping: The material you are trying to convert is already associated with a different value in the mapping table. This can happen if the same material number is being mapped to multiple target values.
  Data Integrity Issues: There may be inconsistencies in the source data, such as duplicate entries or incorrect mappings that have not been resolved prior to the conversion.
  Configuration Errors: Incorrect configuration in the migration tool or mapping settings can lead to this error.
  
  Solution:
  
  Check Mapping Table: Review the mapping table to identify where the material is already mapped. Ensure that each material is uniquely mapped to a single target value.
  Resolve Duplicates: If you find that the material is indeed mapped to multiple values, you will need to decide which mapping is correct and remove or adjust the incorrect mappings.
  Data Cleansing: Before running the migration again, ensure that your source data is clean and free of duplicates. This may involve deduplication processes or data validation checks.
  Adjust Migration Settings: If applicable, review the settings in the migration tool to ensure that they are configured correctly to handle the mappings as intended.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using for any additional guidance on handling mapping issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it may provide features to help manage mappings more effectively.
  Data Migration Best Practices: Review best practices for data migration in SAP to ensure a smooth process, including pre-migration checks and post-migration validation.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific environment and data.