Message type: E = Error
Message class:  CNVA_00006_MSG - Message class for Content Based Search 
Message number: 013
Message text: Activity optimize string already finished.Can not be executed again
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The SAP error message CNVA_00006_MSG013 indicates that an activity related to the optimization process has already been completed and cannot be executed again. This error typically arises in the context of SAP's Advanced Planning and Optimization (APO) or similar modules where certain processes are designed to be executed only once per cycle or session.
Cause: Activity Already Completed: The most common cause of this error is that the optimization activity you are trying to execute has already been completed for the current planning run or session. Incorrect Process Flow: The process flow may not be followed correctly, leading to attempts to re-run an already completed optimization. System Configuration: There may be specific configurations or settings in the system that prevent re-execution of certain activities.
Solution: Check Activity Status: Verify the status of the optimization activity in the system. If it has already been completed, you will need to start a new planning run or session to
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