How To Fix U6166 - There are already entries for backlog set &1 in the error extract table

SAP Error Message - Details

• Message type: E = Error

• Message class: U6 - Message Class for BRE

• Message number: 166

• Message text: There are already entries for backlog set &1 in the error extract table

What causes this issue?

Entries already exist for the backlog set &v1& in the <ZH>Error Extract
Table</>. A statistical backlog set is generated by evaluating a mass
run. For this reason, this programm can only be started once per backlog
set.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Select a statistical backlog set, for which no entries already exist in
the error extract table.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message U6166 - There are already entries for backlog set &1 in the error extract table ?

  The SAP error message U6166 indicates that there are already entries for a specific backlog set in the error extract table. This typically occurs during processes that involve data extraction or processing, such as during the execution of a report or a data transfer operation.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Duplicate Entries: The backlog set specified in the error message already has entries in the error extract table, which prevents the system from adding new entries.
  Incomplete Previous Processing: If a previous process that was supposed to handle the backlog set did not complete successfully, it may have left behind entries in the error extract table.
  Data Consistency Issues: There may be inconsistencies in the data that are causing the system to reject new entries for the specified backlog set.
  
  Solution:
  To resolve the U6166 error, you can take the following steps:
  
  
  Check Existing Entries:
  
  Use transaction codes like SE16 or SE11 to view the contents of the error extract table (usually named something like T_ERROR_EXTRACT or similar, depending on your specific implementation).
  Identify the existing entries for the backlog set specified in the error message.
  
  
  
  Clear Existing Entries:
  
  If the existing entries are no longer needed, you can delete them from the error extract table. Be cautious with this step, as it may affect data integrity.
  Ensure that you have the necessary authorizations to perform deletions and that you have backed up any important data.
  
  
  
  Reprocess the Backlog Set:
  
  After clearing the existing entries, attempt to reprocess the backlog set that caused the error.
  Monitor the process to ensure that it completes successfully without generating the same error.
  
  
  
  Check for System Notes or Patches:
  
  Sometimes, SAP releases notes or patches that address specific issues. Check the SAP Support Portal for any relevant notes related to error U6166.
  
  
  
  Consult Documentation or Support:
  
  If the issue persists, consult the SAP documentation or reach out to SAP support for further assistance. They may provide insights specific to your system configuration or version.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE16 (Data Browser), SE11 (Data Dictionary), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Search for SAP Notes related to error U6166 in the SAP Support Portal for any known issues or fixes.
  Data Management: Ensure that your data management practices are robust to prevent similar issues in the future, including regular monitoring and cleanup of error tables.
  
  By following these steps, you should be able to resolve the U6166 error and prevent it from occurring in the future.