Message type: E = Error
Message class:  CNV_CMIS_M - Message class for CMIS Migration 
Message number: 301
Message text: Select only a single entry
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The SAP error message CNV_CMIS_M301: Select only a single entry typically occurs in the context of data migration or conversion processes, particularly when using the SAP Conversion Tools or during the execution of certain transactions that involve selecting data entries.
Cause: This error message indicates that the system expects the user to select only one entry from a list or table, but multiple entries have been selected instead. This can happen in various scenarios, such as: When trying to execute a function that requires a single record (e.g., a specific object or entity) but the user has highlighted multiple records. In data migration scenarios where the system is designed to process one record at a time for accuracy and integrity.
Solution: To resolve this error, you should: Review Your Selection: Go back to the selection screen or the list where you made your selection. Ensure that you only select one entry. If you have inadvertently selected multiple
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