How To Fix CNV_10020491 - Relationship data for &1 &2 is already contained in table CNV_10020_CLU

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 491

• Message text: Relationship data for &1 &2 is already contained in table CNV_10020_CLU

What causes this issue?

The relationship data for &V1& &V2& is meant to be copied from a
transparent LOR/RPR table into the cluster table. However this data
already exists in the cluster table.

System Response

The data is not copied.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020491 - Relationship data for &1 &2 is already contained in table CNV_10020_CLU ?

  The SAP error message CNV_10020491 indicates that there is a duplicate entry in the conversion table CNV_10020_CLU for the relationship data you are trying to process. This typically occurs during data migration or conversion processes, particularly when using SAP's Conversion Tools.
  Cause:
  The error arises when the system detects that the relationship data for the specified objects (indicated by &1 and &2) already exists in the conversion table. This can happen due to:
  
  Attempting to import or convert data that has already been processed.
  Duplicate entries in the source data that are being migrated.
  A previous migration attempt that did not complete successfully, leaving behind partial or duplicate entries.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Query the table CNV_10020_CLU to check for existing entries that match the relationship data you are trying to import. You can use a SQL query like:
  SELECT * FROM CNV_10020_CLU WHERE field1 = '&1' AND field2 = '&2';
  
  Replace field1 and field2 with the actual column names that correspond to the parameters &1 and &2.
  
  
  
  Remove or Update Duplicates:
  
  If you find duplicates that are not needed, you can delete them from the table. Be cautious and ensure that you are not removing necessary data.
  If the duplicates are valid, you may need to adjust your import or conversion logic to handle them appropriately.
  
  
  
  Review Migration Logic:
  
  Ensure that your migration process is designed to handle existing data correctly. This may involve checking for existing records before attempting to insert new ones.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation related to the specific conversion or migration tool you are using. There may be specific guidelines or best practices for handling such errors.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide insights specific to your version or configuration.
  
  
  
  Related Information:
  
  Table CNV_10020_CLU: This table is part of the SAP data conversion framework and is used to store relationship data during migration processes.
  Data Migration Tools: Familiarize yourself with the tools and methodologies used for data migration in SAP, such as SAP S/4HANA Migration Cockpit, SAP Data Services, or other ETL tools.
  Error Handling: Implement robust error handling in your migration scripts to catch and log errors for easier troubleshooting in the future.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.