# Linear Integration

> Connect Linear to Arcus so a defect on a test case can be linked to an existing Linear issue or create a new one.

Connecting Linear to Arcus by Testsigma lets you attach a defect on a test case to a Linear issue, either one that already exists or one you create from Arcus.

## Prerequisites

- An active Linear account with the necessary permissions.

## Connect Linear

1. In the left navigation, go to **Settings > Integrations**.

2. Click **Setup Integration** next to Linear. The **Linear Login** page opens in a new tab.

3. Log in with your Linear credentials.

4. On the **Requesting Access** page, click **Authorize**.

## Log a defect

1. In the left navigation, open **Test Runs**, then open a [test run](https://testsigma.com/docs/arcus/v2/run-tests/test-runs/).

2. Click the test case you want to log a defect against. The **Quick View** overlay opens.

3. Click **Add a Defect**.

4. On the **Add an Issue** overlay, select **Linear** in the top right.

From here, either link the defect to an issue that already exists or create a new one.

### Link to an existing issue

1. Select the **Link to Existing Issue** tab.

2. Choose the Linear issues to link.

3. Click **+ Add Defect**.

You can link one defect to several existing issues.

### Create a new issue

1. Select the **Create a New Issue** tab. Arcus prefills **Team**, **Project**, and **Description**.

2. Confirm or change the **Team** and **Project**.

3. Select the **Priority**, **State**, and **Assignee**.

4. Enter an **Issue Title**. A description is optional.

5. Click **Create Issue**. The issue is created in Linear with the defect linked to it.