Message type: E = Error
Message class:  CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO) 
Message number: 053
Message text: Manual selection ...
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The SAP error message CNV_CMIS_A_20053 typically relates to issues encountered during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error often indicates that there is a problem with the manual selection of data during the migration process.
Cause: Data Selection Issues: The error may arise if the criteria for manual selection of data are not met or if there are inconsistencies in the data being selected. Configuration Problems: There may be configuration issues in the migration cockpit or the source system that prevent proper data selection. Missing Authorizations: The user may lack the necessary authorizations to perform the manual selection of data. Technical Errors: There could be underlying technical issues, such as database connectivity problems or issues with the migration tool itself.
Solution: Check Selection Criteria: Review the criteria used for manual selection to ensure they are correct and that the data exists in the source system. Review Configuration: Ensure
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