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

Step 2: Add a Quantity Condition
- Select Conditions and search for "Cart Quantity"
- 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.
- 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)
- Scroll to Action
- 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: 15/10/2025
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