Create order
in Extend from the webshop
Use POST on the method CustomerOrders
Get update on order
We recoment that you activate webhook from Extend to the webshop. when this is written we support
order picked (equal to order shipped out from warehouse)
order reserved ( when picking is started, after this no adjustmen is allowed)
Order cancelled
OrderDeliveryDataChanged ( if expected deliverydate is changed on an order)
If you get this hooks, then use the GET customerorders/{id} method to fetch all details about the shipment of the order.
If you can´t use the webhook as trigger to fetch data, then use the GET CustomerOrders (you get a list of ordernumber there) here you can use different parameters to find orders that has been changed shipped etc.