This is a basic implementation of Sitecore Commerce using the OrderCloud Javascript SDK. You can use it as a starting point to discover, understand, and learn more about the Sitecore Commerce OrderCloud capabilities.
On an existing product, check the Enable Inventory Tracking box
Enter an Inventory number
Save
Result: You get an error that you need to complete the required fields. While it's not shown which fields are required, it appears you have to check the "Orders can be placed exceeding the inventory" boolean.
Steps to Reproduce
Result: You get an error that you need to complete the required fields. While it's not shown which fields are required, it appears you have to check the "Orders can be placed exceeding the inventory" boolean.