How To Fix CNV_20100428 - No indicator for duplicate handling is set for customer-specific table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 428

• Message text: No indicator for duplicate handling is set for customer-specific table &1

What causes this issue?

The following key fields are converted in the customer-specific or
generated table &V1&: &V2&
This means that duplicate records may occur when charts of accounts and
accounts/cost elements are merged.

System Response

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

How to fix this error?

Set the indicator for duplicate handling for table &V1&
accordingly in the activity for maintaining customer-specific tables and
fields.

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_20100428 - No indicator for duplicate handling is set for customer-specific table &1 ?

  The SAP error message CNV_20100428 indicates that there is no indicator set for duplicate handling in a customer-specific table during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Cause:
  The error occurs because the system is trying to process data from a customer-specific table, but it cannot find any configuration that specifies how to handle potential duplicate entries. This can happen if:
  
  The table in question has not been properly configured for duplicate handling.
  The necessary settings or indicators for duplicate handling have not been defined in the migration or conversion project.
  The data model or structure of the customer-specific table does not align with the expected configuration for duplicate handling.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Table Configuration:
  
  Review the configuration of the customer-specific table (&1 in the error message). Ensure that it has been set up correctly in the context of the data migration project.
  
  
  
  Set Duplicate Handling Indicators:
  
  Access the relevant transaction or configuration settings in SAP where you can define duplicate handling for the specific table. This may involve:
  
  Setting up a duplicate handling indicator.
  Specifying how duplicates should be treated (e.g., ignore, overwrite, or log).
  
  
  
  
  
  Review Migration Settings:
  
  If you are using a migration tool, check the migration settings to ensure that the customer-specific table is included and that the duplicate handling options are correctly configured.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or guides related to the specific migration tool you are using. There may be specific instructions or best practices for handling customer-specific tables.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test migration or data load to verify that the error has been resolved.
  
  
  
  Seek Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support or consulting with an SAP expert who has experience with data migration and conversion processes.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on configuring duplicate handling for customer-specific tables.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its capabilities, as it may provide additional tools and options for managing data migration.
  Data Quality: Ensure that the data being migrated is clean and well-structured to minimize the chances of encountering duplicate entries.
  
  By following these steps, you should be able to address the CNV_20100428 error and successfully configure duplicate handling for your customer-specific table.