Message type: E = Error
Message class:  CNVMBTREORG - Messages for reorganization 
Message number: 051
Message text: Project &1 not yet deleted in the Control system.
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The SAP error message CNVMBTREORG051 indicates that a project (identified by &1) has not yet been deleted in the Control system. This error typically arises in the context of data migration or project management within SAP systems, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when there is an attempt to delete or modify a project that is still active or has not been fully removed from the Control system. This can happen due to several reasons: The project is still linked to other objects or processes. There are pending tasks or activities associated with the project. The deletion process was not completed successfully in a previous attempt.
Solution: To resolve this error, you can follow these steps: Check Project Status: Verify the status of the project in the Control system. Ensure that it is not active or in use. Complete Pending Activities: If there are any pending tasks or activities associated
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