Notify when a task is closed

Summary:

Hello.

Is it possible to configure an alert that tells the incident owner that there is a pending task when an incident is going to be closed?

Content (required):

Disallow closing the incident and alert the assignee that they cannot close the incident because there is a task with a status other than finished.

Is it possible to do what I want with a configuration or does this involve customization of the application?

Thanks.

Version (include the version you are using, if applicable):

21A-22A-22B

Code Snippet (add any code snippets that support your topic, if applicable):