Message type: E = Error
Message class:  CNV_DMC_MC - Migration Object Modeler 
Message number: 108
Message text: Target structure type '&1' does not exist
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The SAP error message CNV_DMC_MC108 indicates that the target structure type specified in a data migration or conversion process does not exist in the system. This error typically arises during data migration activities, especially when using the SAP Data Migration Cockpit or similar tools.
Cause: Missing Target Structure: The target structure type referenced in the migration process is not defined in the system. This could be due to a configuration issue or an incomplete setup. Incorrect Mapping: The mapping between the source and target structures may be incorrect, leading to a reference to a non-existent target structure. Transport Issues: If the target structure was supposed to be transported from another system (e.g., development to production), it may not have been transported correctly. Version Mismatch: The version of the migration tool or the data model may not be compatible with the current system setup.
Solution: Check Target Structure Definition: Verify that the target structure type exists in the
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