Message type: E = Error
Message class:  CNV_NCE_BAS - Number conversion engine: messages 
Message number: 414
Message text: Conversion rule & is not a valid value
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The SAP error message CNV_NCE_BAS414 typically occurs during data conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that a conversion rule specified in the migration process is not recognized as a valid value. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Invalid Conversion Rule: The conversion rule specified in the migration configuration may not exist or may be incorrectly defined. Data Format Issues: The data being migrated may not conform to the expected format or type that the conversion rule is designed to handle. Configuration Errors: There may be issues in the configuration settings of the migration cockpit or the specific migration object being used. Missing Customization: If the conversion rule is a custom one, it may not have been properly implemented or activated in the system.
Solution: Check Conversion Rules: Verify that the conversion rule specified in the migration object is valid and
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