Message type: E = Error
Message class:  CNV_OT_TB_UI - Messages for task list - UI representation 
Message number: 004
Message text: More than one task selected
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The SAP error message CNV_OT_TB_UI004: More than one task selected typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the user has attempted to perform an action that requires only one task to be selected, but multiple tasks have been selected instead.
Cause: The primary cause of this error is user action where multiple tasks are highlighted or selected in the user interface when the system expects only a single task to be selected for the operation being performed. This can happen in various scenarios, such as: Trying to execute a migration step or process that is designed to work with a single task. Selecting multiple entries in a list or table where the action is restricted to one entry at a time.
Solution: To resolve the error, follow these steps: Deselect Tasks: Go back to the task selection screen
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