openproject/docs/api/apiv3/paths/notification_unread.yml

# /api/v3/notifications/{id}/unread_ian
---
post:
  summary: Unread notification
  operationId: unread_notification
  tags:
    - Notifications
  description: |-
    Marks the given notification as unread.
  parameters:
    - name: id
      in: path
      description: notification id
      example: '1'
      required: true
      schema:
        type: integer
  responses:
    '204':
      description: OK
    '404':
      content:
        application/hal+json:
          schema:
            $ref: '../components/schemas/error_response.yml'
          example:
            _type: Error
            errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
            message: The requested resource could not be found.
      description: |-
        Returned if the notification does not exist or if the user does not have permission to view it.

        **Required permission** being recipient of the notification