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

# Design approval reviewer invalidated notifications

The NotificationContent sent when a reviewer in a design is invalidated.

If the `type` of [notification](https://www.canva.dev/docs/apps/rest-apis/webhooks/#notification) is `design_approval_reviewer_invalidated` (for example, if the reviewer's account is removed from the team, or their account is closed), the webhook payload object contains the following parameters:

<Prop.List>
  <Prop name="id" type="string" required mode="output">
    The unique identifier for the notification.
  </Prop>

  <Prop name="created_at" type="integer" required mode="output">
    When the notification was created, as a UNIX timestamp (in seconds
    since the UNIX epoch).
  </Prop>

  <Prop name="content" type="object" required mode="output">
    The notification content for when a reviewer in a design is invalidated.

    <PillAccordion title={<>Properties of <strong>content</strong></>} defaultExpanded={true}>
      <Prop.List>
        <Prop name="type" type="string" required mode="output">
          <Prop.Extras>
            **Available values:** The only valid value is `design_approval_reviewer_invalidated`.
          </Prop.Extras>
        </Prop>

        <Prop name="receiving_team_user" type="TeamUserSummary" required mode="output">
          Metadata for the user, consisting of the User ID and Team ID.

          <PillAccordion title={<>Properties of <strong>receiving_team_user</strong></>}>
            <Prop.List>
              <Prop name="user_id" type="string" required mode="output">
                The ID of the user.
              </Prop>

              <Prop name="team_id" type="string" required mode="output">
                The ID of the user's Canva Team.
              </Prop>
            </Prop.List>
          </PillAccordion>
        </Prop>

        <Prop name="design" type="DesignSummary" required mode="output">
          Basic details about the design, such as the design's ID, title, and URL.

          <PillAccordion title={<>Properties of <strong>design</strong></>}>
            <Prop.List>
              <Prop name="id" type="string" required mode="output">
                The design ID.
              </Prop>

              <Prop name="urls" type="DesignLinks" required mode="output">
                A temporary set of URLs for viewing or editing the design.

                <PillAccordion title={<>Properties of <strong>urls</strong></>}>
                  <Prop.List>
                    <Prop name="edit_url" type="string" required mode="output">
                      A temporary editing URL for the design. This URL is only accessible to the user that made the API request, and is designed to support [return navigation](https://www.canva.dev/docs/apps/rest-apis/return-navigation-guide/) workflows.

                      NOTE: This is not a permanent URL, it is only valid for 30 days.
                    </Prop>

                    <Prop name="view_url" type="string" required mode="output">
                      A temporary viewing URL for the design. This URL is only accessible to the user that made the API request, and is designed to support [return navigation](https://www.canva.dev/docs/apps/rest-apis/return-navigation-guide/) workflows.

                      NOTE: This is not a permanent URL, it is only valid for 30 days.
                    </Prop>
                  </Prop.List>
                </PillAccordion>
              </Prop>

              <Prop name="created_at" type="integer" required mode="output">
                When the design was created in Canva, as a Unix timestamp (in seconds since the Unix
                Epoch).
              </Prop>

              <Prop name="updated_at" type="integer" required mode="output">
                When the design was last updated in Canva, as a Unix timestamp (in seconds since the
                Unix Epoch).
              </Prop>

              <Prop name="title" type="string" mode="output">
                The design title.
              </Prop>

              <Prop name="url" type="string" mode="output">
                URL of the design.
              </Prop>

              <Prop name="thumbnail" type="Thumbnail" mode="output">
                A thumbnail image representing the object.

                <PillAccordion title={<>Properties of <strong>thumbnail</strong></>}>
                  <Prop.List>
                    <Prop name="width" type="integer" required mode="output">
                      The width of the thumbnail image in pixels.
                    </Prop>

                    <Prop name="height" type="integer" required mode="output">
                      The height of the thumbnail image in pixels.
                    </Prop>

                    <Prop name="url" type="string" required mode="output">
                      A URL for retrieving the thumbnail image.
                      This URL expires after 15 minutes. This URL includes a query string
                      that's required for retrieving the thumbnail.
                    </Prop>
                  </Prop.List>
                </PillAccordion>
              </Prop>

              <Prop name="page_count" type="integer" mode="output">
                The total number of pages in the design. Some design types don't have pages (for example, Canva docs).
              </Prop>
            </Prop.List>
          </PillAccordion>
        </Prop>
      </Prop.List>
    </PillAccordion>
  </Prop>
</Prop.List>

## Example: Design approval reviewer invalidated