Message type: E = Error
Message class:  CNVMBTREORG - Messages for reorganization 
Message number: 065
Message text: Subproject &1 deleted.
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The SAP error message CNVMBTREORG065 indicates that a subproject has been deleted in the context of a migration or conversion project. This message typically arises in the context of SAP's Migration Cockpit or during data migration processes, particularly when using the SAP S/4HANA Migration tools.
Cause: The error occurs when: A subproject that is referenced in the migration process has been deleted or is no longer available. There may be inconsistencies in the project structure, possibly due to manual deletions or changes made to the project configuration. The system is trying to access a subproject that has been removed from the project hierarchy.
Solution: To resolve this error, you can take the following steps: Check Project Structure: Verify the current structure of your migration project. Ensure that the subproject in question is indeed deleted and confirm the hierarchy of projects and subprojects. Restore Subproject: If the deletion was unintentional, you may need to restore the subproject. If you have a backup
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