An example that allows customers to buy the same variant only in multiples of 3. Use this when selling in bundle units, such as sets of 3 or sets of 6.
Prerequisite: The initial setup for quantity limits must be complete. If you haven't done this yet, see "Initial Setup (Product Quantity Limits)".
You can check the behavior after setup in [Demo] Quantity Limit in Multiples of 3.
When you enable the quantity rule, it evaluates the total quantity of the same variant in the cart.
Total quantity of the same variant is a multiple of 3 (3, 6, 9 items, etc.): purchase is allowed.
Total quantity of the same variant is not a multiple of 3 (1, 2, 4, 5 items, etc.): purchase is not allowed.
(1) Add a quantity rule
Open the app admin → "Quantity limits" → "Quantity rules" → "Add quantity rule".
(2) Enter the settings
Configure the following.
Field | Value |
|---|---|
Title | Any internal title |
Minimum quantity | 3 |
Maximum quantity | Not set |
Increment | 3 |
Applicability | Variant |
Eligible items | Products or variants to limit by quantity |
Product message | Enter if needed |
Display timing | Cart updated and checkout |
Message for minimum order quantity | Enter if needed |
Message for increment of order quantity | Enter if needed |
(3) Save and enable the quantity rule
After saving the settings, select "Enable." Saving alone does not apply the quantity limit.
(4) Check the behavior
Add the eligible items to the cart in the quantities above, and check the result when the cart is updated and at checkout.
If you also set the minimum quantity to 3, the same as the increment, then 1–2 items are blocked by the minimum quantity check, and quantities like 4–5 items (not a multiple of 3) are blocked by the increment check.
You can use
{{increment}}in the message for increment of order quantity.If you enable the app embed on the target theme, the quantity picker on the product page also increases and decreases in steps of 3.