We currently use an app to send Shopify orders to our fulfillment center via email 3x a day. We send an xml file from the app.
Now we need to send order data in real-time to the fulfillment center to a listener URL that they setup. Would the best way to achieve this consist of creating our own internal app that takes order data and transforms it to xml that gets posted to that listener url?
Another issue we have is that if an order is sent and then let's say 15 min later a customer calls in and needs to add to their order they just made. There has to be something sent to the fulfillment center letting them know that an order is updated. Their current system does not allow duplicate order numbers because of the possibility of sending out duplicate packages. So, if there is a way to send over an update list or something.