You can track the number of products in stock in your store. You can add a quantity for each product separately. When a customer buys a product, the quantity is reduced automatically.
When the quantity reaches zero, the product shows as Out of Stock and can’t be ordered, and the store owner gets an email about it.
To track product inventory, navigate to the E-Commerce tile > Catalog > Products > Specific Product > Manage link
Updating Product Stock
Select the E-Commerce tile.
Select Catalog > Products and select the product you would like to update.
Select Manage to view the available stock options.
Hide Out Of Stock Products
If you wish, you can hide from customers the products that are out of stock. To do this, just disable the corresponding option in your store Settings > General > Cart & Checkout