Set minimums, maximums, multiples and allowed pack sizes for products, variants, collections, vendors, product types, customer tags or the whole order. Add order-value limits and date windows such as Black Friday. Shoppers see the rules on product pages and in the cart; Shopify checkout validates orders, including Shop Pay and express checkout. Create rules in plain words with AI, review them, then save. Ask ILM explains blocked carts.

• Turn plain-language instructions into rules to review before saving
• Set minimums, maximums, multiples and allowed pack sizes
• Set product-level and whole-order value limits
• Enforce order rules at checkout, including express checkout
• Apply date windows and customer-tag rules for wholesale