Your sale is live, then a welcome or influencer code lands on top and your margin quietly disappears. Guardly rejects discount codes when the cart has sale items, checked per variant, using the codes you already have. Mixed carts still get the code on items not on sale. Stop code stacking, limit codes per order, or pause a code family during a sale. Add minimum and maximum quantities, packs and wholesale minimums. Test cart shows what shoppers will see and why, before a rule goes live.

• Reject discount codes on sale items, checked per variant, with your own message
• Re-apply the discount to items not on sale so mixed carts still save
• Stop code stacking, cap codes per order, or pause influencer codes in a sale
• Set min and max quantities, packs and wholesale minimums by customer tag
• Test any cart to see which rule fired and why, before customers ever see it