<?xml version="1.0"?>
<entity_order_message>
  <order_message id="Delay">
    <name>Delay</name>
    <message>Hi,

Unfortunately, an item on your order is currently out of stock. This may cause a slight delay in delivery.
Please accept our apologies and rest assured that we are working hard to rectify this.

Best regards,</message>
  </order_message>
</entity_order_message>