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# atoti.QueryCube.distributing_levels

#### *property* QueryCube.distributing\_levels *: [Set](https://docs.python.org/3/library/collections.abc.html#collections.abc.Set)\[LevelIdentifier]*

The identifiers of the levels distributing data across the data cubes connecting to the query cube.

Each level is independently considered as a partitioning key.
This means that for a query cube configured with `distributing_levels={date_level_key, region_level_key}`, each data cube must contribute a unique date, not present in any other data cube, as well as a unique region.