Message type: E = Error
Message class:  CNV_20400_CHECK - Messages for check functions (controlling area merge) 
Message number: 018
Message text: &1 additional objects with no company code connection found
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The SAP error message CNV_20400_CHECK018 indicates that there are additional objects in your system that do not have a connection to any company code. This error typically arises during data migration or system conversion processes, particularly when using SAP's Conversion Tools or during the execution of specific programs related to data migration.
Cause: The error is caused by the presence of objects (such as master data, transactional data, or configuration settings) that are expected to be linked to a specific company code but are not. This can happen due to various reasons, including: Incomplete Data Migration: During the migration process, some objects may not have been correctly assigned to a company code.
Configuration Issues: The system may not have been configured properly to associate certain objects with the relevant company codes. Data Integrity Issues: There may be inconsistencies or missing links in the data that prevent the association with a company code.
Solution: To resolve this error,
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