Articles on: Blockify - Checkout Rules

Set Quantity Limit with Checkout Validation

Overview

The Set Quantity Limit feature helps you control the maximum or minimum number of items a customer can purchase in a single order. By setting limits, you can:

  • Prevent bulk buying of limited products.
  • Restrict discounted product quantities per checkout.
  • Ensure fair distribution during sales campaigns (e.g., BFCM).

This feature works through Checkout Validation Rules in Blockify Checkout.


How to Set Up Quantity Limit

Step 1: Navigate to Checkout Validation

  1. Open the Blockify Checkout app in your Shopify Admin Go to Checkout Rules → Checkout Validation.
  2. Click Create Rules.

Step 2: Add a Quantity Condition

  1. Select Conditions and search for "Cart Quantity"
  2. Choose your trigger:
    • Greater than (>) → Restrict if cart exceeds a quantity.
    • Less than (<) → Restrict if cart is below a quantity.
    • Equal to → Allow only exact quantity.
  1. Enter the number (e.g., 5).

Example:

  • Cart Quantity > 5 → Prevents checkout if customers buy more than 5 items.

Step 3: Define the Action (Validation Message)

  1. Scroll to Action
  2. Enter the message that will show at checkout if the condition is met.
  • Example: “You can only purchase up to 5 items per order.”

Step 4: Save & Test the Rule

  • Click Save Rule.
  • Test your setup by adding items to your cart and proceeding to checkout.
  • If limits are exceeded, the validation message will appear, and checkout will be blocked.



Updated on: 22/09/2025

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