Message type: E = Error
Message class:  CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO) 
Message number: 163
Message text: Please select atleast one option to proceed
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message CNV_CMIS_A_20163 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the user has not selected any options or entries in a required selection screen, which is necessary to proceed with the migration or data transfer process.
Cause: The error is triggered when the user attempts to proceed without making a selection in a mandatory field or option. This could be due to: Not selecting any records or options in a list. Failing to fill out required fields in a form. Attempting to execute a process that requires at least one selection but none has been made.
Solution: To resolve this error, you should: Review the Selection Screen: Go back to the selection screen where the error occurred and ensure that you have made at least one selection. This could involve: Checking checkboxes for records you want to process. Selecting options from dropdown menus. Filling
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