Message type: E = Error
Message class:  CNV10400 - Messages for package 10400 (characteristics) 
Message number: 218
Message text: Master data of first selected characteristic is displayed
More than one characteristic was selected. However the master data can
only be displayed for one characteristic at a time.
The master data for the first selected characteristic is displayed.
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 CNV10400218, which states "Master data of first selected characteristic is displayed," typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This message indicates that the system is showing the master data for the first characteristic selected in the migration process.
Cause: Data Migration Process: This message is often a part of the data migration process where the system is trying to display the master data for a characteristic that is being processed.
Configuration Issues: There may be issues with the configuration of the migration project or the mapping of the data. Missing Data: The master data for the selected characteristic may not be available or properly defined in the source system. Incorrect Selection: The user may have selected an incorrect characteristic or not followed the required steps in the migration process.
Solution: Check Master Data: Ensure that the master data for the characteristic
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