# Mark a Duplicate Issue

This page shows how to mark one [issue](https://developers.google.com/issue-tracker/concepts/issues) as a duplicate of
another in Google Issue Tracker. When you mark an issue as a duplicate, its
status is changed to **Duplicate** and it is considered closed.

You must have **Edit Issues** [permission](https://developers.google.com/issue-tracker/concepts/access-control) for the
components that contain both issues in order to mark an issue as a duplicate of
another.

## Mark an issue as duplicate

When you mark an issue as duplicate, you indicate that the content of the issue
is reported in another issue, called the *canonical issue* . The canonical issue
may be chosen because it's older, has more visibility, or encompasses a larger
scope when compared to the duplicate issue. You can mark an issue as duplicate
either on that issue's page or in a search results page
([using a bulk edit](https://developers.google.com/issue-tracker/guides/edit-issue-bulk)). You can also mark an issue as
a duplicate from the canonical issue page by navigating to the **Duplicates**
tab and clicking **Add**.

When you mark an issue as duplicate, it is considered closed and given a status
of **Duplicate** . The **Reporter** , **Assignee** , **Verifier** , and any users or
groups in the **Collaborators** and **CC** lists are added to the **CC** list of
the canonical issue. Hotlists are also added to the canonical bug. The duplicate
issue appears in the **Duplicates** tab of the canonical issue. The duplicate
issue page indicates the duplicate status with a chip in the top bar. You can
hold the pointer over the link in the top bar or status field to display a
[hovercard](https://developers.google.com/issue-tracker/concepts/hovercards) for the canonical issue.

### Duplicates tab on the issue details page

Information for an issue marked as duplicate is found in the **Duplicates** tab
in the on the details page of the canonical issue.

The number of duplicate issues that a canonical issue has is displayed in
parenthesis within the **Duplicates** tab's title. Clicking on the tab displays
a list of issues that are marked as duplicate of the canonical issue. The
duplicate issues table displays the following values:

- **Title**: Click the title to open the issue's page.
- **Team**: The team associated with the duplicate issue.
- **ID**: Click the ID of the duplicate issue to copy it to the clipboard.
- **Created**: The date and time the issue was created.
- **Reporter**: The user who reported the issue.

## Mark an issue as a duplicate

To mark an issue as a duplicate of another:

1. Open the issue.

2. In the **App Bar** near the top of the page, click **Mark as Duplicate**.

   ![](https://developers.google.com/issue-tracker/images/public/mark-as-duplicate-button.png)
3. In the text field that appears, you have two options. You can search for the
   canonical issue (the issue you want to remain active) by typing a search
   query. Alternatively, you can enter the issue id.

   ![](https://developers.google.com/issue-tracker/images/public/duplicate-search.png)

   > [!NOTE]
   > To view more information about each search result, click the icon to the right of the issue title to open the issue in a new tab. ![](https://developers.google.com/issue-tracker/images/public/result-hover.png)

4. If you searched for the canonical issue, select it from the search results.

5. Click **Close as duplicate**.

   The issue status will now indicate that the issue has been marked as a
   duplicate of another issue.

> [!TIP]
> You can also mark an issue as duplicate by changing its status to **Duplicate** in the **Issue fields** panel or as part of a [bulk edit](https://developers.google.com/issue-tracker/guides/edit-issue-bulk).

## Unmark an issue as duplicate

An issue can be unmarked as duplicate in several ways:

- Click the **Unmark Duplicate** button in the App Bar.
- Click the **Re-open** link beneath the status field.
- Change the status of the issue.

An issue can also be unmarked as duplicate from the canonical issue page. From
the **Duplicates** tab, find the issue you want to unmark as duplicate. Click
the **More options** button on the right side and select **Remove duplicate**
from the drop-down menu.

If you click **Unmark Duplicate** , **Re-open** , or **Remove duplicate** , the
status for the issue becomes **New** if there is no **Assignee** , or
**Assigned** if there is an **Assignee**.

Once unmarked, the issue no longer appears in the canonical issue's
**Duplicates** tab. However, people that were automatically added to the **CC**
for the canonical issue remain on that list unless explicitly removed.

## What's next

- [Mark an issue as blocking another issue](https://developers.google.com/issue-tracker/guides/block-issue)