Message type: E = Error
Message class:  CNV_DMC_SIN - Messages for s-innovations migration 
Message number: 249
Message text: Class &1 is not assigned to material &2
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The SAP error message CNV_DMC_SIN249 indicates that a specific class (denoted as &1) is not assigned to a material (denoted as &2) in the system. This error typically arises during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit or similar tools.
Cause: Class Not Assigned: The specified class is not assigned to the material in the material master data. This can happen if the class was not properly linked during the data migration process. Data Inconsistency: There may be inconsistencies in the data being migrated, such as missing or incorrect class assignments.
Configuration Issues: The configuration settings in the SAP system may not be set up correctly to allow for the assignment of the class to the material.
Solution: Check Material Master Data: Go to the material master record for the material in question (transaction code MM03). Verify if the class is assigned to the material. If not, you may need to assign
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