Allow backorder in Magento

How to allow customers to purchase any quantity of product from Magento site . I mean how to enable product for sale even if the product is not available on Magento inventory. For example if a product has 10 quantity available in inventory and if some customer wants to buy 50 Quantity of that product then by default the customer would get an error message that “The required quantity of that product is not available on site” like this.


Although most of the website admin might not like this behavior as they wants allow to product sale irrespective of product quantity available on website. So we can do that easily with Magento based websites.

Steps to allow product for sale (backorder) in magento based websites:

Step 1: Login to admin section of website

Step 2: Go to System – configuration – inventory

Step 3: Click on “Product Option” tab You will see an option for backorders

Initialy backorder is set to 0 which means customer are not allowed to purchase more than the quantity available on inventory.

The other options you will have is

i) allow quantity below 0 & notify customer => Which means you can allow your customers to purchase the product even if the product is not available but we will show a message to user that currently this product are not in stock but we will supply this once we get.

ii) allow quantity below 0 => Sell any number of product irrespective of inventory without letting customers know.

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Chandra Shekhar

GCP Architect
Chandra Shekhar Pandey is Google certified Cloud engineer, I am Magento2 Trained developer. Having huge experience in designing cloud solution. I have around 12 years of experience with world enterprise IT companies and fortune 500 clients. During my architecture design I am always caring about high availability, fast performance and resilient system. From the programmer background I have huge experience in LAMP stack as well. Throughout my carrier I have worked on Retail, E-Learning, Video... Read More about Chandra Shekhar

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