Message type: E = Error
Message class:  CNV10400 - Messages for package 10400 (characteristics) 
Message number: 026
Message text: Table &3, domain &1, data element &2, field &4
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The SAP error message CNV10400026 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error message indicates that there is a problem with a specific table, domain, data element, or field during the conversion process.
Cause: The error message CNV10400026 can be caused by several factors, including: Data Type Mismatch: The data being migrated does not conform to the expected data type defined in the target system for the specified field. Domain Issues: The domain associated with the data element may have constraints that are not being met by the incoming data. Field Length Exceeded: The length of the data being migrated may exceed the maximum length defined for the target field. Invalid Values: The data being migrated may contain values that are not valid according to the domain or data element definitions.
Configuration Issues: There may be configuration issues in the migration
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