There are three situations when someone should be notified about an order that requires approval:

When an order is submitted that requires approval, an Approval Required event is sent and an e-mail is sent to the approver. We first check the locale of the user and then send the appropriate e-mail. When the approver either approves or reject the order an e-mail is sent to the buyer telling him or her what happened to the order.

This is a b2bcommerce scenario that we override in Motorprise in order to add the German language branch.