Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 088
Message text: Other company codes that are assigned to a participating company:
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The SAP error message CNV_20200_CHECK088 typically arises during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there are inconsistencies or issues related to company code assignments in the context of a participating company.
Cause: The error message CNV_20200_CHECK088 generally occurs due to one or more of the following reasons: Inconsistent Company Code Assignments: The participating company may have other company codes assigned that are not properly configured or are inconsistent with the migration settings. Missing Configuration: There may be missing or incorrect configuration settings for the company codes in the system. Data Integrity Issues: There could be data integrity issues in the source system that prevent the migration tool from correctly processing the company codes. Cross-Company Code Transactions: If there are transactions that involve multiple company codes, and those codes are not properly set up, it can lead to this error.
Solution: To resolve the error CNV_20200_CHECK088,
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