Receipt Confirmation Notification/ Email: What does "request more information" response do?

Summary:

1) User receives email from Receipt Confirmation workflow

2) clicks "Request More information" action button in the email

3) what happens? What are the options for configuring this?

Content (required):

Moreover, we are looking for a more straightforward summary and explanation of all the functionality and behaviors when responding to the Receipt Confirmation email.

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

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