How To Fix CNV_20100398 - Priority check for duplicate records is active for table &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 398

• Message text: Priority check for duplicate records is active for table &1

What causes this issue?

In case of duplicate records during the conversion for this table a
priority routine is called to decide which record shall be updated to
the database.
This decision is done based on the mapping entries (Prio flag) in the
following descending priority order:
Priority on account level (B-level)
Priority on account level (A-level)
Priority on chart of accounts level

System Response

Information

How to fix this error?

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

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_20100398 - Priority check for duplicate records is active for table &1 ?

  The SAP error message CNV_20100398 indicates that there is a priority check for duplicate records that is active for a specific table (denoted by &1). This error typically arises during data migration or data transfer processes, particularly when using SAP's data migration tools or during system conversions.
  Cause:
  The error occurs when the system detects that there are duplicate records in the specified table, and the priority check for duplicates is enabled. This is a safeguard to ensure data integrity and prevent issues that may arise from having multiple identical records in the database.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicate Records:
  
  Use SQL queries or SAP transaction codes (like SE16 or SE11) to check for duplicate entries in the specified table. You can group by key fields to find duplicates.
  
  
  
  Remove or Consolidate Duplicates:
  
  Depending on your business requirements, you may need to delete or consolidate duplicate records. Ensure that you have a backup of your data before making any deletions.
  
  
  
  Adjust Migration Settings:
  
  If you are using a migration tool, check the settings to see if you can disable the priority check for duplicates. However, this should be done with caution, as it may lead to data integrity issues.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation related to the specific migration tool or process you are using. There may be specific guidelines or best practices for handling duplicates.
  
  
  
  Testing:
  
  After making changes, perform a test migration to ensure that the issue is resolved and that no new duplicates are introduced.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide additional insights or solutions based on your specific scenario.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE16 (Data Browser), SE11 (Data Dictionary), and others that can help you analyze the data in the affected table.
  Data Migration Tools: If you are using tools like SAP S/4HANA Migration Cockpit or SAP Data Services, refer to their specific documentation for handling duplicate records.
  Data Quality Management: Implement data quality checks as part of your data migration strategy to prevent duplicates from being introduced in the first place.
  
  By following these steps, you should be able to address the CNV_20100398 error and ensure a smoother data migration process.