> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nx1cloud.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Check who has access

> List every role and user with access to data, a storage location, or a tag, and see which policy grants it.

Select data, a storage location, or a tag. NexusOne then lists every role and user that can reach it, with their
access level and the policy that grants it. Use this check to see everything that has access to one resource.

> [!NOTE]
>
> In Data Access, **Data** means the catalogs, schemas, tables, and columns in the NexusOne catalog. A **storage location**
> is a path in an object storage bucket, which holds files.

## Prerequisites

Before starting this task, ensure you have the following:

Required roles: `nx1_migration_admin`, `nx1_migration_ops`, or `nx1_migration_user`.

## Check who has access

> [tab] Web portal
>
> Perform these steps to check who has access.
>
> 1. Log in to NexusOne.
>
> 2. On the top navigation bar, hover your mouse over **Govern** and then select **Data Access**.
>
> 3. Click the **Who has access** tab.
>
> 4. Select what to check:
>
>    * **Data**: Select the catalog, and optionally the schema and table.
>    * **Storage location**: Select a bucket to fill in the **Location** field, or enter the path in the **Location** field.
>    * **Tag**: Select the tag. This option appears only when a Ranger tag service is linked to NexusOne.
>
> 5. Review the table. Each row shows the following:
>
>    * **Group or user**: The role or user with access.
>    * **Level**: The access level.
>    * **Conditions**: Any hidden columns, row filters, or denied permissions.
>    * **From**: The policy that grants the access.

> [tab] REST API
>
> Use the following API endpoint to
> [show who has access](https://docs.nx1cloud.com/api-reference/endpoints/data-access/show-who-has-access-to-a-table-schema-catalog-storage-location-or-tag.md)
> to data, a storage location, or a tag.

## Additional resources

* For an overview of the Govern feature, refer to [Govern Overview](https://docs.nx1cloud.com/documentation/govern/overview.md).
* To see the policies behind this access, refer to [View all policies](https://docs.nx1cloud.com/documentation/govern/tasks/data-access/ranger-policy/view-all-policies.md).


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