---
schema_version: "1"
id: 40022062942500f00fd2414289f05bc989b25948399508561fe23a4132df2bf4
title: Purchase Quantity Rules for a B2B Store
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/commerce/264-0-0/comm_products_qr_parent.md
canonical_url: https://help.salesforce.com/s/articleView?id=commerce.comm_products_qr_parent.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 21bc67440c437693cf95e7dff9bff32c8fe976b6eb84753961ec6d6e70eaeccc
description: Use rules to control the amount of a product that a customer can buy.
products:
  - Commerce
  - B2B Commerce
release: "264"
---
# Purchase Quantity Rules for a B2B Store

Use rules to control the amount of a product that a customer can buy.

[Which Salesforce Commerce Product Do I Have?](https://help.salesforce.com/s/articleView?id=commerce.comm_what_product.htm&language=en_US)

- **[Purchase Quantity Rules for a B2B Store](https://help.salesforce.com/s/articleView?id=commerce.comm_products_qr_intro.htm&release=264.0.0&type=5)**  
    A purchase quantity rule defines the minimum and maximum amounts of a product that a customer can buy and the number of products that are added with each increase. You can assign one purchase quantity rule to each simple product and product variation. In the rule, the minimum and maximum quantities must be multiples of the increment. For example, minimum 3, maximum 300, increment 3. You can define quantity amounts as whole numbers or as fractions up to four decimal places.
- **[Enable Purchase Quantity Rules for a B2B Store](https://help.salesforce.com/s/articleView?id=commerce.comm_products_qr_product2_layout.htm&release=264.0.0&type=5)**  
    To make purchase quantity rules available for your store’s products, add the Quantity Rule related list to the Product object’s page layout.
- **[Create a Purchase Quantity Rule for a B2B Store](https://help.salesforce.com/s/articleView?id=commerce.comm_products_qr_create_assign.htm&release=264.0.0&type=5)**  
    You can define the minimum and maximum amounts of a product that a customer can buy and the number of products to add with each increase. You can assign a quantity rule to simple products and product variations. Because parent products aren’t sold, they don’t need quantity rules.