[Yandex Cloud documentation](../../../index.md) > [Yandex DataLens](../../index.md) > Troubleshooting > Database-side error

# [Yandex DataLens] Failed to create <object_type>

`ERR.US.BAD_REQUEST.ALREADY_EXISTS`

The object already exists. You cannot create two objects with identical names in the same folder.
Objects include:

* [Connections](../../concepts/connection/index.md).
* [Datasets](../../dataset/index.md).
* [Charts](../../concepts/chart/index.md).
* [Dashboards](../../concepts/dashboard.md).

To resolve the error, enter a name for the object that is unique for the folder where it will be saved.