Message type: E = Error
Message class:  CNV_20211_CHECK - Messages for check functions (company conversion) 
Message number: 258
Message text: No implicit company merges
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The SAP error message CNV_20211_CHECK258: No implicit company merges typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that the system has detected a situation where it cannot automatically merge company codes or entities due to certain constraints or configurations.
Cause: Company Code Configuration: The error often arises when there are multiple company codes that are supposed to be merged, but the system finds that they cannot be merged implicitly due to existing dependencies or configurations. Data Inconsistencies: There may be inconsistencies in the data related to the company codes, such as open transactions, different fiscal year variants, or differing currencies. Missing Configuration: The necessary configuration for merging company codes may not be set up correctly in the system. Custom Logic: If there are custom developments or enhancements in the system that affect company code behavior, these may prevent implicit merges.
Solution: Review Company
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