Discount application information now available for draft orders on the Customer Account API

As of GraphQL Customer Account API version 2026-07, draft orders now expose discount applications.

You can use the new discountApplications field on DraftOrder to query discounts applied to a draft order, and the new discountAllocations field on DraftOrderLineItem to query how discounts are allocated across line items.

For example:

query DraftOrderDiscounts($id: ID!) {
     draftOrder(id: $id) {
       discountApplications(first: 10) {
         nodes {
           __typename
           ... on DiscountCodeApplication {
             code
           }
           ... on ManualDiscountApplication {
             title
           }
           allocationMethod
           targetSelection
           targetType
           value {
             ... on MoneyV2 {
               amount
               currencyCode
             }
             ... on PricingPercentageValue {
               percentage
             }
           }
         }
       }
       lineItems(first: 10) {
         nodes {
           title
           discountAllocations {
             allocatedAmount {
               amount
               currencyCode
             }
             discountApplication {
               __typename
             }
           }
         }
       }
     }
   }

Use these fields to understand which discounts apply to a draft order and how those discounts affect individual draft order line items.