How can I access multiple discountNodes Metafields value in Shopify discount function?

Functions
,
1

I’m having trouble accessing multiple metafields in Shopify discount functions. I used the **discountAutomaticAppCreate** GraphQL mutation to create two automatic discounts with the same appId and the same metafield namespace.

I’m currently creating the discount using the discountAutomaticAppCreate mutation:

const client = new shopify.clients.Graphql({session});
const data = await client.query({
  data: {
    "query": `mutation discountAutomaticAppCreate($automaticAppDiscount: DiscountAutomaticAppInput!) {
      discountAutomaticAppCreate(automaticAppDiscount: $automaticAppDiscount) {
        userErrors {
          field
          message
        }
        automaticAppDiscount {
          discountId
          title
          startsAt
          endsAt
          status
          appDiscountType {
            appKey
            functionId
          }
          combinesWith {
            orderDiscounts
            productDiscounts
            shippingDiscounts
          }
        }
      }
    }`,
    "variables": {
      "automaticAppDiscount": {
        "title": "Discount - 1",
        "functionId": "abababab-abab-432f-43sdfd-98dd14fb8af5",
        "startsAt": "2025-05-05T17:09:21Z",
        "endsAt": "2025-05-05T17:09:21Z",
        "combinesWith": {
          "orderDiscounts": false,
          "productDiscounts": false,
          "shippingDiscounts": false
        },
        "metafields": [
          {
            "namespace": "test",
            "key": "test-key-1",
            "type": "json",
            "value": "{\n  \"discounts\": [{\n    \"value\": {\"fixedAmount\": {\"amount\": 5}},\n    \"targets\": [{\"orderSubtotal\": {\"excludedVariantIds\": []}}]\n  }],\n  \"discountApplicationStrategy\": \"FIRST\"\n}"
          }
        ]
      }
    },
  },
});

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However, I’m unable to retrieve these metafield values within the Shopify discount functions. Below is the input.graphql code I’ve been working with.

Each discount has its own metafield data, but when I try to access them inside the Shopify Function, I can’t retrieve the values.

@tobebuilds suggested this approach, but unfortunately, it’s not working in my case.

query GetCartContents($selectedCollectionIds: [ID!]) {
  cart {
    lines {
      quantity
      merchandise {
        __typename
        ... on ProductVariant {
          id
          product {
            id
            inAnyCollection(ids: $selectedCollectionIds)
          }
        }
      }
    }
  }
 discountNode {
    metafield_1: metafield(namespace: "test", key: "test-key-1") {
      value
    }
    metafield_2: metafield(namespace: "test", key: "test-key-2") {
      value
    }
  }
}

Output I am getting:

"discountNode": {
    "metafield1": null,
    "metafield2": {
      "value": "{\"title\":"Test metadata",\"products\":[]}"
    },
  },

I’d appreciate any insights or suggestions. Thanks in advance!

2

Hi, just following up, I’m using discountAutomaticAppCreate to create two automatic discounts with the same appId and metafield namespace (but different key), but in my function I can only access one metafield.

@Liam-Shopify @Liz-Shopify @LisaV-Shopify @tobebuilds @lodel @Alan_G @NickWesselman would appreciate any guidance!

3

From my experience doing the same — but creating the discounts using a Discount Admin UI Extension — the metafields need to be created with the same key.
And when the function runs multiple times each run has its own metafield.

The issue I’m facing is that when I create multiple discounts, the function runs once for each, and it only keeps one. It seems like selectionStrategy: "All" might have a bug, it behaves as if it were set to "MAXIMUM", since only the highest discount is applied across all items.