Shopify Release notes and new features

POS UI extensions now return percentage values for percentage discounts

Shopify POS 11.15 corrects the value returned by Discount.amount for Percentage discounts to match the Cart API contract. Extensions that used this value as money need to update their logic. What changed A 25% discount on a $200 line item now returns amount: 25 . POS 11.14 and earlier returned amount: 50 , the monetary amount deducted.

• Cart mutations reject unconfirmed writes in POS UI extensions 2026-10
• Downgrade app access scopes from write to read
• POS UI extensions now return percentage values for percentage discountsPricing
• Per-customer request limit for the Customer Account API