Message type: E = Error
Message class:  CNV_PE - General messages for posting engine 
Message number: 084
Message text: No data model extension found, which suits the selection criteria
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The SAP error message CNV_PE084 indicates that there is no data model extension found that matches the specified selection criteria during a data migration or conversion process. This error typically occurs in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
Cause: Missing Data Model Extension: The primary cause of this error is that the data model extension required for the specific migration or conversion process is not defined or does not exist in the system. Incorrect Selection Criteria: The selection criteria used in the migration process may not match any existing data model extensions. This could be due to incorrect parameters or filters applied during the selection.
Configuration Issues: There may be configuration issues in the migration cockpit or the data migration tool being used, leading to the inability to find the appropriate data model extension. Version Compatibility: The version of the migration tool
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