When you add a product or service, you choose its type: stock, non-stock, service, or bundle. If your business needs change, you can change a product or service's type, in some cases.
For example, you may have a non-stock product but want to start tracking how many you have on hand. In this case, you could change the product type to "stock."
You can only change services and non-stock products to another type. You can’t change an stock product or a bundle to another type, and you can’t change any product or service type into a bundle.
To change the type of many products or services at once:
You can only use this method to change services to non-stock products or vice versa.
See also