Message type: E = Error
Message class: /SAPAPO/SDP_TLBGUI -
Message number: 023
Message text: The chosen selection has been locked
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The SAP error message /SAPAPO/SDP_TLBGUI023 indicates that the selection you are trying to work with in the SAP Advanced Planning and Optimization (APO) system has been locked. This typically occurs when another user or process is currently using the same selection, preventing you from making changes or accessing it. Causes: Concurrent Access: Another user is currently using the same selection criteria or has locked the selection for editing. System Processes: Background jobs or processes may be running that lock the selection for a certain period. User Lock: The selection might be locked due to a previous session that did not close properly or was terminated unexpectedly. Solutions: Wait and Retry: If the lock is temporary (e.g., due to another user), wait for a few moments and try again. Check Active Sessions: Use transaction code SM12 to check for any active locks. You can see which user or process is holding the lock and take appropriate action. Release Locks:
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