Static tracking urls
If you provide a tracking url via your API then you should enter it's JSON key in the Tracking URL field as shown below:
In the example above we will automatically fetch the value contained within the "tracking_url" parameter and attached this to the customer's order within Shopify.
Dynamically generated tracking urls
If you do not include a tracking url via your API you can dynamically construct a url using liquid variables.
There are currently three variables available:
Shopify's unique identifier for the order
Your unique identifier for the order provided in your Delivery Create response
The tracking number provided in your Delivery Create response