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

KE686 - Overview

• 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