Message type: E = Error
Message class:  CNV10400 - Messages for package 10400 (characteristics) 
Message number: 216
Message text: Select one characteristic to be displayed
Select a characteristic for display
Either select a characteristic for display or place the cursor on the
corresponding line in the list of characteristics.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV10400216, which states "Select one characteristic to be displayed," typically occurs in the context of data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or SAP Data Services tools. This error indicates that the system expects the user to select a specific characteristic (or attribute) to display, but none has been selected.
Cause: Missing Selection: The user has not selected a characteristic from the available options in the interface.
Configuration Issues: There may be issues with the configuration of the data migration tool or the specific migration project. User Interface Error: Sometimes, the user interface may not be functioning correctly, leading to the inability to select a characteristic.
Solution: Select a Characteristic: Ensure that you select a characteristic from the list provided in the interface. This is usually done by clicking on the appropriate option or checkbox. Check Configuration: Review the configuration settings of the migration project to ensure
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