The geodatabase system tables required to run this operation were not found in the input database. For some operations, a database must be enabled with geodatabase functionality.
Ensure that your input workspace has geodatabase functionality enabled. To enable the geodatabase and add the geodatabase system tables, run the Enable Enterprise Geodatabase tool.
This error may also result if your geodatabase is an older version. Use the Upgrade Geodatabase tool to ensure that your geodatabase functionality is current.