The Shopify ‘continue selling when out of stock’ box is found in the product/variant section of the Shopify admin dashboard.

We also have a Youtube video on the topic here.

What does it do? #

This Shopify setting has two important functions as far as pre-orders are concerned:

1. Having the ‘continue selling when out of stock’ box ticked allows zero stock products to pass through your checkout. If this box is unticked for a zero stock product, then customers won’t be able to purchase the product. For this reason, PreProduct automatically ticks and unticks the box as products are listed/de-listed for pre-order.
2. Most Shopify themes will display an ‘out of stock’ messages when a product/variant has 0 stock. However, having the ‘continue selling when out of stock’ box usually stops this from happening.