Message type: E = Error
Message class:  CNV_DMC_MC - Migration Object Modeler 
Message number: 039
Message text: Enter a migration object ID
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The SAP error message CNV_DMC_MC039 typically occurs during the data migration process when using the SAP Data Migration Cockpit (DMC). This error indicates that the system requires a migration object ID to proceed, but it has not been provided or is missing.
Cause: Missing Migration Object ID: The most common cause of this error is that the migration object ID has not been specified in the migration project or during the execution of the migration process. Incorrect Configuration: There may be an issue with the configuration of the migration project, leading to the system not recognizing the migration object ID. User Input Error: The user may have overlooked entering the required migration object ID in the relevant fields.
Solution: Enter Migration Object ID: Ensure that you provide a valid migration object ID in the appropriate field. This ID is typically associated with the specific data you are trying to migrate. Check Migration Project Configuration: Review the configuration
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