Message type: E = Error
Message class:  CNV_NCE_BAS - Number conversion engine: messages 
Message number: 403
Message text: Action cancelled
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The SAP error message CNV_NCE_BAS403: Action cancelled typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that a specific action or process was aborted, which can be due to various reasons. Possible Causes: User Intervention: The action may have been manually cancelled by the user. Data Validation Errors: There may be issues with the data being migrated, such as missing mandatory fields, incorrect data formats, or data integrity violations.
Configuration Issues: Incorrect configuration settings in the migration tool or the source system can lead to this error. System Performance: If the system is under heavy load or if there are performance issues, the process may time out or be cancelled. Authorization Issues: The user executing the migration may not have the necessary authorizations to perform the action. Solutions: Check Logs: Review the detailed logs for the migration process to identify the specific reason
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