UPGRADE_NOT_SUPPORTED error class
Table is not eligible for upgrade from Hive Metastore to Unity Catalog. Reason:
Bucketed table.
Table located on DBFS root.
Hive SerDe table.
Missing file system scheme.
Not an external table.
Unsupported DBFS location.
Unsupported file system scheme <scheme>.
Unsupported provider <provider>.
Table type <tableType> is not supported.