# Dry Run a Check

Source: https://userguide.qualytics.io/data-quality-checks/checks/how-tos/dry-run/

Run a check against a sample of its data to see what it would flag, without creating anomalies or running a Scan. Use it to test a new or edited check before it goes live. For what the results show, see [Dry Run](https://userguide.qualytics.io/data-quality-checks/checks/deep-dive/dry-run/).

> **Note: Permission Required**
>
> Running a Dry Run requires the **Drafter**, **Author**, or **Editor** team permission on the check's datastore. Revealing masked values in the results requires **Editor**. See [Team Permissions](https://userguide.qualytics.io/settings/access/teams/team-permissions/overview/).

## Steps

**Step 1**: Open the **Checks** tab of the datastore, table or file, or field that holds the check.

**Step 2**: Click the **Active**  or **Draft**  tab, depending on the check's status. To narrow the list, pick a subtab, such as **Important**, **Owned**, or **Favorite**, or search and filter it. See [Filter and Sort Checks](https://userguide.qualytics.io/data-quality-checks/checks/how-tos/filter-and-sort/).

**Step 3**: Click the check. Its page opens.

**Step 4**: Click  at the top right. A menu opens.

**Step 5**: Click **Dry Run** . The **Dry Run Results** dialog opens and shows its progress while it prepares the data, asserts the check, and scans for anomalous data.

**Step 6**: Review the results: the anomalies found, with their asserted and anomalous record counts, and the source records behind them. When nothing fails, the dialog reads **No anomalies were identified**.

**Step 7**: Optionally, click **Download source records** to save the evaluated records as a CSV file.

> **Tip: Draft checks too**
>
> A Draft check can be dry run as well, so you can test its logic before you activate it.

*Last updated: November 10, 2026.*