In order to let customer checkout you must first have your Shipping zones set up in your Shopify settings. Basically all you are doing is telling Shopify where you will and wont ship to. Do you want to only ship to the USA and Canada, or will you ship all over the world? Maybe you only want to ship to Australia? Please keep in mind that each shipping zone and settings will be unique to each store. This is a general guide on how to set up the Shopify settings, but you will need to make adjustments depending on your needs, location, and shipping rates. Here’s the most common options for Shipping rates in Shopify.
1. Click “Settings”
2. Click “Shipping and delivery”
3. Click “General Shipping Rates”
4. Scroll down until you see an option to “add rates” for the Turn 14 Distribution API
5. Click “Done”
6. Now under the Turn 14 Distribution API location click “Add shipping zone”
7. Name your Shipping Zone
8. Then add the states or countries you want to ship to
9. Click “Done”
10. Again under the Turn 14 Distribution API click “Add rate”
11. Now you can add your own shipping rates