Message type: E = Error
Message class:  CNV - Conversion: Messages for Conversion Services (CNCC) 
Message number: 091
Message text: No records that should be deleted found in table CNVSTPARS
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The SAP error message CNV091: No records that should be deleted found in table CNVSTPARS typically occurs during data migration or conversion processes, particularly when using the SAP Conversion Tools or the SAP S/4HANA Migration Cockpit. This message indicates that the system attempted to delete records from the CNVSTPARS table, but found no records that met the criteria for deletion.
Cause: No Records to Delete: The most straightforward cause is that there are simply no records in the CNVSTPARS table that match the criteria for deletion. This can happen if the records have already been processed or deleted in a previous step. Incorrect Configuration: There may be an issue with the configuration of the migration or conversion process, leading to an expectation that records should exist when they do not. Data Migration Process: The error may arise during a specific phase of the data migration process where the system is trying to clean up
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