Message type: E = Error
Message class:  KK -  
Message number: 233
Message text: Worklist already in display
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The SAP error message KK233: Worklist already in display typically occurs in the context of the Controlling (CO) module, particularly when dealing with worklists in transaction codes related to internal orders, cost centers, or other controlling activities. This error indicates that the worklist you are trying to access is already open in display mode, preventing you from opening it again for editing or further actions.
Cause: Multiple Sessions: The worklist is already open in another session or window. SAP does not allow the same worklist to be opened in multiple instances for editing. User Lock: The worklist may be locked by another user or session, which can happen if someone else is currently viewing or editing it. Session Timeout: If a session was left open for an extended period, it may have timed out, but the system still recognizes it as being in use.
Solution: Check Open Sessions: Look for any other open SAP sessions or
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