How To Fix CNV_CDOP_UCIA029 - Duplicate entries were deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDOP_UCIA - CDOP 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_CDOP_UCIA029 - Duplicate entries were deleted ?

  The SAP error message CNV_CDOP_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.
  Issues in the data preparation phase where duplicates were not filtered out.
  
  
  
  Data Mapping Issues: Sometimes, the mapping of fields from the source to the target system may not be correctly defined, leading to duplicates being created during the transformation process.
  
  
  Solution:
  
  
  Identify Duplicates: Before running the migration or conversion process, it is essential to identify and resolve any duplicate entries in the source data. This can be done by:
  
  Running queries or reports to find duplicates based on key fields.
  Using data profiling tools to analyze the data for duplicates.
  
  
  
  Data Cleansing: Once duplicates are identified, you should cleanse the data by:
  
  Removing or consolidating duplicate records.
  Ensuring that the remaining records are unique and meet the requirements of the target system.
  
  
  
  Review Data Mapping: Check the data mapping and transformation rules to ensure that they are correctly defined and do not inadvertently create duplicates during the migration process.
  
  
  Testing: After cleansing the data and adjusting the mapping, perform a test migration with a smaller dataset to ensure that the issue is resolved before executing the full migration.
  
  
  Documentation: Document the changes made to the data and the processes to prevent similar issues in future migrations.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to data migration and the specific tools you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) 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 to seek advice or share experiences with others who may have encountered similar issues.
  
  By addressing the root cause of the duplicates and ensuring proper data management practices, you can prevent the CNV_CDOP_UCIA029 error from occurring in future migrations.