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title: DataLens On-premises error ERR.DS_API.US.VALIDATION_FAILED.CONNECTION
description: This page describes the Invalid connection ID DataLens On-premises error.
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# [DataLens On-premises] Invalid connection ID

`ERR.DS_API.US.VALIDATION_FAILED.CONNECTION`

Error validating the requested connection ID. A special case of the [ERR.DS_API.US.VALIDATION_FAILED](./ERR-DS_API-US-VALIDATION_FAILED.md) error when requesting a connection with an incorrect ID.

Check and correct the requested connection ID.

You can copy object IDs from the relevant object's menu or in navigation by clicking **Copy ID**. The ID will be saved to the clipboard.