When UWM or another Lender/AMC using the Portal requests a revision on an order you're working on for them, you will find the notes associated with that revision directly in your Anow account.
Begin by going to the details page for the order requiring a revision.
Look for the Internal Notes area. This is where you will find any notes regarding the revision request on this specific order.
When the revision is closed by the client, any relevant notes will be sent here as well.