How To Fix KE686 - System error: incompatible update of TKEF entry &

SAP Error Message - Details

• Message type: E = Error

• Message class: KE -

• Message number: 686

• Message text: System error: incompatible update of TKEF entry &

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 KE686 - System error: incompatible update of TKEF entry & ?

  The SAP error message KE686, which states "System error: incompatible update of TKEF entry," typically occurs in the context of CO (Controlling) module transactions, particularly when dealing with cost center accounting or internal orders. This error indicates that there is an issue with the update of the TKEF table, which is used for storing data related to cost accounting.
  Causes:
  
  Data Inconsistency: The error may arise due to inconsistencies in the data being processed, such as mismatched keys or incorrect entries in the TKEF table.
  Concurrency Issues: If multiple users or processes are trying to update the same entry in the TKEF table simultaneously, it can lead to conflicts and this error.
  Custom Code: If there are custom enhancements or modifications in the system that affect the TKEF table, they may not be handling updates correctly.
  System Bugs: There may be bugs in the SAP system or specific patches that have not been applied, leading to this error.
  
  Solutions:
  
  Check for Data Consistency: Review the data being processed to ensure that it is consistent and valid. Look for any discrepancies in the cost center or internal order data.
  Review Custom Code: If there are any custom developments related to cost accounting, review the code to ensure it is correctly handling updates to the TKEF table.
  Transaction Logs: Check the transaction logs for any additional error messages or warnings that may provide more context about the issue.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal. There may be specific notes addressing this error or providing patches that resolve the issue.
  Database Locking: Investigate if there are any database locks that might be causing the issue. You can use transaction codes like SM12 to check for locks.
  System Restart: In some cases, a system restart may help clear temporary issues that are causing the error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KE30 (for reports), KE21 (for creating internal orders), and KE24 (for displaying cost centers).
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including transaction codes used, data involved, and any custom developments.
  Testing: If possible, replicate the issue in a test environment to better understand the conditions under which the error occurs.
  
  By following these steps, you should be able to diagnose and resolve the KE686 error in your SAP system.