Before you start
- Enable the app embed — see Install and enable the app embed.
- Decide what you want to limit and the minimum or maximum value you want to use.
Steps
1. Install Nex Validator
If Nex Validator is not installed yet, install it from the Shopify App Store and approve the required permissions. If it is already installed, skip to the next step.
2. From the dashboard, choose Simple Order Limit → Create Rule.
3. Give the rule a Title. This is required and helps you identify the rule later. Use a clear name such as “Minimum 3 items per order” instead of “Rule 1”.
4. Choose what you want to limit, then enter its value.
| Tab | What it limits |
|---|---|
| Cart | The total cart quantity or order amount |
| Product | The quantity of a specific product |
| Collection | The quantity of products from a collection |
Choose a Min limit when customers must reach a value, or a Max limit when they must not go above it.
5. Write the Custom error message. Tell customers exactly what they need to change. For example, “Please add at least 3 items to continue” is clearer than “Invalid cart”.
6. Set the rule Status to Enabled, then save the rule.
Verify it worked
- Create a cart that does not meet the rule and go to checkout. Checkout should be blocked and your message should appear.
- Create a cart that meets the rule. Checkout should continue normally.
Refresh or reopen checkout between tests so you are testing the latest saved version of the rule.
Next
- All the limit types, one page each
- Messages — what customers see and where