How To Fix KF216 - System error: tried to insert duplicate records in table &

SAP Error Message - Details

• Message type: E = Error

• Message class: KF -

• Message number: 216

• Message text: System error: tried to insert duplicate records in table &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KF216 - System error: tried to insert duplicate records in table & ?

  The SAP error message KF216, which states "System error: tried to insert duplicate records in table &," typically occurs when there is an attempt to insert a record into a database table that already contains a record with the same unique key or primary key. This can happen in various scenarios, such as during data uploads, batch processing, or when executing certain transactions.
  Causes:
  
  Duplicate Data: The most common cause is that the data being processed contains duplicates that violate the unique constraints of the target table.
  Data Upload Issues: If you are using tools like LSMW (Legacy System Migration Workbench) or BAPIs to upload data, the source data may have duplicates.
  Concurrency Issues: Multiple processes trying to insert the same record simultaneously can lead to this error.
  Incorrect Logic in Custom Code: If there is custom ABAP code that handles data insertion, it may not be correctly checking for existing records before attempting to insert new ones.
  
  Solutions:
  
  Check for Duplicates: Review the data being inserted to ensure there are no duplicates. You can use transaction codes like SE16 or SE11 to check the existing records in the target table.
  Modify Data Upload Logic: If using LSMW or similar tools, ensure that the data source does not contain duplicates. You may need to preprocess the data to remove duplicates before the upload.
  Implement Error Handling in Custom Code: If the error arises from custom ABAP code, ensure that the code checks for existing records before attempting to insert new ones. Use SELECT statements to verify the existence of records.
  Use Transaction Management: If multiple processes are involved, consider implementing transaction management to handle concurrency issues, such as using locks or handling exceptions properly.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on best practices for data handling.
  
  Related Information:
  
  Transaction Codes: Use SE16 or SE11 to view the structure and contents of the table in question.
  Debugging: If you have access to the ABAP debugger, you can set breakpoints in the code that is causing the error to analyze the data being processed.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  Documentation: Review SAP documentation related to the specific module or functionality you are working with, as it may provide insights into data handling and constraints.
  
  By following these steps, you should be able to identify the cause of the KF216 error and implement a solution to resolve it.