How To Fix CNV_CDMC_CA006 - Activity with same key already exists in database

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CA - CDMC Clearing Analysis

• Message number: 006

• Message text: Activity with same key already exists in database

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDMC_CA006 - Activity with same key already exists in database ?

  The SAP error message CNV_CDMC_CA006 indicates that there is an attempt to insert a record into the database that has a key that already exists. This typically occurs during data migration or conversion processes, particularly when using the SAP Conversion Tools or Data Migration Cockpit.
  Cause:
  
  
  Duplicate Records: The most common cause is that the data being imported or processed contains duplicate entries for a unique key. This could be due to:
  
  Errors in the source data.
  Incorrect mapping or transformation rules that lead to the generation of duplicate keys.
  Previous migration attempts that were not fully cleaned up.
  
  
  
  Data Integrity Issues: There may be integrity constraints in the database that prevent the insertion of records with duplicate keys.
  
  
  Configuration Issues: The configuration of the migration tool or the settings in the SAP system may not be correctly set up to handle existing records.
  
  
  Solution:
  
  
  Identify Duplicates: 
  
  Review the data being processed to identify any duplicate records. This can often be done by querying the source data or using data profiling tools.
  Check the unique key constraints in the target database to understand which fields are causing the conflict.
  
  
  
  Clean Up Data: 
  
  Remove or consolidate duplicate records in the source data before attempting the migration again.
  Ensure that the data transformation rules are correctly set to avoid generating duplicates.
  
  
  
  Adjust Migration Settings: 
  
  If applicable, adjust the settings in the migration tool to handle existing records. Some tools allow for options like "update existing records" instead of "insert".
  
  
  
  Log and Monitor: 
  
  Enable detailed logging during the migration process to capture more information about where the duplicates are occurring.
  Monitor the migration process closely to catch any issues early.
  
  
  
  Test Migration: 
  
  Before running a full migration, conduct a test migration with a smaller dataset to ensure that the issue is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the CNV_CDMC_CA006 error for any specific patches or updates that may address this issue.
  Documentation: Review the documentation for the specific migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) for best practices and troubleshooting tips.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CNV_CDMC_CA006 error and successfully complete your data migration or conversion process.