Product quantity enables you to add the number of items available for a particular product when uploading the product onto your store.
A few things to note about product quantity:
Product quantity is required if you enable direct checkout on your store. Direct checkout allows your customers to pay directly to you before leaving your store. So if they're buying just a specific quantity either one or three item(s), they have to include the quantity of what they're buying before paying. Read more about Direct Checkout here.
If you sell any product that can’t be quantified by a number such as restaurants selling food products or any item you always have, you can select the Always Available option. However, if you have products and you know the quantity, you can always add the quantity number.
To manage product quantity:
Step 1
Log in to your account
Step 2
Go to the side navigation and click on Products
Step 3
Click on the three-dot icon beside the product you want to add quantity to
Step 4
Click on Edit Item
Step 5
The product details are displayed for you to edit, scroll down then click on Manage Product Quantity
Step 6
When the dropdown for managing product quantity opens, you can add the quantity of the available product.
When you click on Save Updates, as seen in the screenshot below; showing you the number of product quantity in stock.
You also have the option to select Always Available if you sell products that numbers can't quantify or if you always have the product.
When you click on Save Updates, as seen in the screenshot below; showing you that you have an infinite amount of the product.
That's how you manage product quantity.