How To Fix CNV_20900022 - Temporary duplicates occur for vendor number &2; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 022

• Message text: Temporary duplicates occur for vendor number &2; see long text

What causes this issue?

Vendor &V1& is to be renamed to vendor &V2&. Vendor &V2& exists in the
system, and will be renamed to &V3&. This will cause
<DS:TX.CNV_MBT_TEMP_DUPLICATES>temporary duplicates</>.
<ZH>Procedure</>
Check your mapping table for correctness.
If the mapping is correct, be aware that the conversion runtime might be
longer.
Otherwise correct the mapping values.
If the runtime is critical, we recommend avoiding temporary duplicates
and changing the mapping values.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20900022 - Temporary duplicates occur for vendor number &2; see long text ?

  The SAP error message CNV_20900022 indicates that temporary duplicates have been detected for a vendor number during a data migration or conversion process. This error typically arises in the context of using SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer methods.
  Cause:
  The error occurs when the system identifies that there are multiple entries for the same vendor number in the data being processed. This can happen due to:
  
  Data Duplication: The source data may contain duplicate entries for the same vendor, which can occur during data extraction or preparation.
  Inconsistent Data: There may be inconsistencies in the data format or structure that lead to the system interpreting the same vendor as different entries.
  Temporary Data States: During the migration process, temporary records may be created that conflict with existing records.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  Check Source Data: Review the source data for duplicates. You can use tools like Excel or SQL queries to identify and eliminate duplicate vendor entries.
  Data Cleansing: Cleanse the data to ensure that each vendor number is unique and correctly formatted. This may involve merging records or removing unnecessary duplicates.
  Use Data Validation Tools: Utilize SAP's data validation tools to check for duplicates before running the migration process.
  Review Migration Settings: Ensure that the migration settings are correctly configured to handle duplicates. This may involve adjusting parameters or settings in the migration tool.
  Consult Long Text: The error message suggests checking the long text for more details. This long text may provide specific guidance or additional context for the error.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the documentation for the specific migration tool you are using, as it may contain best practices for handling duplicates.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with details about the error and the steps you have taken to resolve it.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_20900022 error in your SAP environment.