How To Fix CNV_CDMC_UCIA029 - Duplicate entries were deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_UCIA - CDMC Upgrade/Change Impact Analysis

• Message number: 029

• Message text: Duplicate entries were deleted

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDMC_UCIA029 - Duplicate entries were deleted ?

  The SAP error message CNV_CDMC_UCIA029: Duplicate entries were deleted typically occurs during data migration or conversion processes, particularly when using the SAP Conversion Tools or during the execution of a data migration project. This message indicates that the system has detected duplicate entries in the data being processed and has automatically deleted them to maintain data integrity.
  Cause:
  
  
  Duplicate Data: The primary cause of this error is the presence of duplicate records in the source data that are being migrated or converted. This can happen due to:
  
  Incorrect data extraction processes.
  Data entry errors in the source system.
  Merging of datasets without proper deduplication.
  
  
  
  Data Mapping Issues: If the mapping of fields from the source to the target system is not correctly defined, it may lead to duplicates being created during the migration process.
  
  
  Configuration Issues: Sometimes, the configuration settings in the migration tool may not be set to handle duplicates appropriately.
  
  
  Solution:
  
  
  Identify Duplicates: Before running the migration, analyze the source data to identify and resolve any duplicates. This can be done using data profiling tools or SQL queries to find duplicate records based on key fields.
  
  
  Data Cleansing: Cleanse the data by removing or consolidating duplicate entries in the source system. This may involve:
  
  Merging records.
  Deleting unnecessary duplicates.
  Ensuring that unique constraints are applied to the relevant fields.
  
  
  
  Review Mapping and Configuration: Check the mapping configuration in the migration tool to ensure that it is set up correctly to handle duplicates. Adjust the settings if necessary.
  
  
  Testing: After cleansing the data and adjusting configurations, perform a test migration to ensure that the issue is resolved and that no further duplicates are detected.
  
  
  Documentation: Document the changes made to the data and the migration process to ensure that similar issues can be avoided in future migrations.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific migration tool you are using (e.g., SAP S/4HANA Migration Cockpit) for any known issues or additional guidance.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration, including data profiling, cleansing, and validation techniques.
  SAP Community: Engage with the SAP Community forums for insights and experiences shared by other users who may have encountered similar issues.
  
  By addressing the root cause of the duplicates and ensuring proper data management practices, you can prevent this error from occurring in future migrations.