How To Fix CNV209 - Data record &1 exists already and will not be inserted

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 209

• Message text: Data record &1 exists already and will not be inserted

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV209 - Data record &1 exists already and will not be inserted ?

  The SAP error message CNV209, which states "Data record &1 exists already and will not be inserted," typically occurs during data migration or data upload processes, particularly when using SAP's data migration tools like the SAP S/4HANA Migration Cockpit or other data transfer methods. This error indicates that the system has detected a duplicate record that already exists in the target database, and as a result, it will not allow the insertion of the new record.
  
  Cause:
  
  
  Duplicate Data: The most common cause of this error is that the data being imported contains records that already exist in the target system. This could be due to:
  
  Previous data uploads that included the same records.
  Data being extracted from a source system that has overlapping records with the target system.
  Incorrect data preparation or transformation that leads to duplicates.
  
  
  
  Primary Key Violation: The record being inserted may have a primary key or unique constraint that is violated