Message type: E = Error
Message class:  CNV_20320 - Messages for CWB package 20320 
Message number: 012
Message text: Select at least one entry
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The SAP error message CNV_20320012: Select at least one entry typically occurs during data migration or conversion processes, particularly when using SAP's tools for data transfer, such as the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the user has not selected any entries from a list or table where at least one selection is required to proceed with the operation.
Cause: No Selection Made: The most common cause is that the user has not selected any entries from the list or table presented in the migration tool. Filter Settings: Sometimes, the filter settings may inadvertently hide all entries, leading to no visible selections. User Interface Issue: There may be a glitch or issue with the user interface that prevents selections from being registered.
Solution: Make a Selection: Ensure that you select at least one entry from the list or table before proceeding. This is the most straightforward solution. Check Filters: Review
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