Message type: E = Error
Message class:  CNV_MBT_46 - PCL message class 
Message number: 459
Message text: Select the PEB from the tree
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The SAP error message CNV_MBT_46459 typically occurs during the execution of a migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system is expecting the user to select a PEB (Project Execution Block) from a tree structure, but it seems that the selection has not been made or is invalid.
Cause: No Selection Made: The user may not have selected any PEB from the provided tree structure. Invalid Selection: The selected PEB may not be valid or may not exist in the current context. User Authorization: The user may not have the necessary authorizations to view or select the PEB. Technical Issues: There could be a technical issue with the migration tool or the underlying data model.
Solution: Select a PEB: Ensure that you are selecting a valid PEB from the tree structure. Navigate through the tree and make sure to click on a valid entry. Check
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