---
title: Comments and notifications
short: Comments and notifications
type: guide
tier: enterprise
section: "Review & Measure Quality"
order: 0
order_enterprise: 306
meta_title: Comment in Label Studio Enterprise

meta_description: The comments and notifications features define how annotators, reviewers and administrators communicate and receive updates on projects and tasks.

Comments are a Label Studio Enterprise feature that allows communication between reviewers and annotators:

This annotator-reviewer feedback loop is an important tool in your review workflow, allowing you to:

• Speed up the labeling process
• Increase the annotation quality
• Build more solid labeling and review processes

Permissions

All users have the following commenting permissions for any annotations that they would otherwise have access to view:

• View the Comments panel and read previous comments.
• Add new comments.

Additional permissions are as follows:

Add a comment

You can add comments from the Comments panel when viewing an annotation. All users have access to the Comments panel.

Link comments to regions and fields

You can link your comment to a specific area within an annotation.

This can be a region (for example, a bounding box or a span of text) or it can be a field (for example, a classification).

Note the following:

• You can link comments to fields within the labeling configuration. However, if the field is a classification, choice, or taxonomy, you can only attach a comment if there is already a selection.
• You can only link comments to an entire text area. You cannot link comments to regions within text areas.
• Linking is not supported for Ranker or Pairwise fields.

Comment actions

The actions you can perform depend on your user role permissions and whether it's your comment. You can access comment actions from the overflow menu:

Filter for comments

The Data Manager has several columns to display comment information:

!!! note
Users in the Reviewer or Annotator role must be granted access to view the Data Manager. You can grant access in the project settings.

Require comments

You can configure the project so that annotators and reviewers are required to leave comments after taking specific actions:

• Annotation > Annotating Options > Annotators must leave a comment on skip
• Review > AReviewers must leave a comment on reject

Comment notifications

To see notifications, click your user profile icon in the upper right.

Use the overflow menu to mark notifications as read or unread.

!!! note
Notifications that have already been read are denoted with a gray background.

Annotators

Annotators can write comments on their own annotations.

Sent notifications

When an annotator writes a comment, the users who are notified depend on whether it is the first comment on the annotation:

• If this is the first comment on an annotation, then all users within a project that have the role of Reviewer or higher see the comment in their notification list.
• If this comment is in response to an ongoing discussion within the comments panel, then only users who are have added comments to the annotation will see a notification.

Received notifications

An annotator receives a notification any time another user leaves a comment on one of their annotations.

Reviewers and other users

Reviewers can write comments on annotations that they are reviewing. This applies to users with the Reviewer, Manager, Admin, and Owner role.

Sent notifications

When a reviewer writes a comment, then the users who are notified depend on their role and whether they have also left comments:

• Annotators get a notification for all comments on the annotations they created.
• If other users have also left comments on the annotation (for example, if multiple users are reviewing the annotation), then they will also be notified when a new comment appears.

Received notifications

A reviewer receives a notification when:

• If the comment is the first comment on an annotation, then all users within a project that have the role of Reviewer or higher see the comment in their notification list.
• If you have already left a comment on an annotation, you receive a notification when any user, regardless of role, adds a new comment.