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title: DataLens On-premises error ERR.US.BAD_REQUEST.ALREADY_EXISTS
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  This page describes the Failed to create <object_type> DataLens On-premises
  error.
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# [DataLens On-premises] 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.