Message type: E = Error
Message class:  CNV_CMIS_M - Message class for CMIS Migration 
Message number: 426
Message text: Table exclude from conversion for the current data transfer.
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The SAP error message CNV_CMIS_M426 indicates that a specific table has been excluded from the data conversion process during a data transfer. This typically occurs in the context of SAP data migration projects, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: The error can be caused by several factors, including: Configuration Settings: The table may have been explicitly marked for exclusion in the migration settings or configuration. Data Integrity Issues: There may be data integrity issues or constraints that prevent the table from being included in the conversion. Mapping Issues: The mapping of fields from the source system to the target system may not be correctly defined, leading to the exclusion of the table. Technical Restrictions: Certain tables may not be supported for conversion due to technical restrictions or dependencies on other tables.
Solution: To resolve the CNV_CMIS_M426 error, you can take the following steps: Check Configuration: Review the migration configuration settings to
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