How To Fix DMC_RT_MSG013 - Data already exists in table &1 (check entries)

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 013

• Message text: Data already exists in table &1 (check entries)

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 DMC_RT_MSG013 - Data already exists in table &1 (check entries) ?

  The SAP error message DMC_RT_MSG013 indicates that there is an attempt to insert or update data in a table where the data already exists. This typically occurs in scenarios involving data migration, data replication, or data transformation processes, particularly when using tools like SAP Data Migration Cockpit (DMC) or SAP Data Services.
  
  Cause:
  
  
  Duplicate Entries: The most common cause is that the data you are trying to insert already exists in the target table. This could be due to:
  
  Previous data migration processes that have already inserted the same records.
  Data being processed multiple times due to configuration issues or incorrect mappings.
  Manual entries in the target table that conflict with the incoming data.
  
  
  
  Primary Key Violations: If the table has a primary key or unique constraint, attempting to insert a record with a key that already exists will trigger this error.
  
  
  Incorrect Data Mapping: If the data mapping is not set up correctly, it may lead