How To Fix CNV_DMC_HC102 - Duplicate entries of table &1 exist in Settings for Logging Table Check

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_HC -

• Message number: 102

• Message text: Duplicate entries of table &1 exist in Settings for Logging Table Check

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_HC102 - Duplicate entries of table &1 exist in Settings for Logging Table Check ?

  The SAP error message CNV_DMC_HC102 indicates that there are duplicate entries in a specific table related to the settings for logging table checks during a data migration or conversion process. This error typically arises in the context of using the SAP Data Migration Cockpit or similar tools where data consistency and integrity are crucial.
  Cause:
  The error occurs when the system detects that there are multiple entries in a configuration table that should only have unique entries. This can happen due to:
  
  Incorrect Configuration: During the setup of logging or migration settings, duplicate entries may have been inadvertently created.
  Data Import Issues: If data was imported or migrated from another system, it might have included duplicates.
  Manual Errors: Manual entries or modifications to the configuration tables can lead to duplicates.
  
  Solution:
  To resolve the CNV_DMC_HC102 error, you can follow these steps:
  
  
  Identify the Table: The error message will specify the table (denoted as &1) where the duplicates exist. You need to identify this table in the system.
  
  
  Check for Duplicates: Use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to view the contents of the table. You can run a query to find duplicate entries based on the relevant key fields.
  
  
  Remove Duplicates: Once you have identified the duplicate entries, you can either:
  
  Delete the duplicates manually if they are not needed.
  Modify the entries to ensure that only unique records remain.
  
  
  
  Validate Changes: After making changes, validate that the table now contains only unique entries. You can re-run the checks or the migration process to ensure that the error is resolved.
  
  
  Review Configuration: If the duplicates were caused by a configuration error, review the settings and ensure that the process for adding entries to the table is controlled to prevent future duplicates.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11, SE16, and SE80 for data dictionary and object management.
  SAP Notes: Check SAP Notes for any known issues or patches related to the CNV_DMC_HC102 error. SAP frequently updates its knowledge base with solutions for common issues.
  Documentation: Review the documentation for the SAP Data Migration Cockpit or the specific migration tool you are using to understand the expected configurations and settings.
  
  By following these steps, you should be able to resolve the CNV_DMC_HC102 error and proceed with your data migration or conversion tasks.