---
title: UI Extensions - Shipping method option list targets will be duplicated for possible types of delivery groups (One Time Purchases and Subscription) - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/ui-extensions-shipping-method-option-list-targets-will-be-duplicated-for-possible-types-of-delivery-groups-one-time-purchases-and-subscription
  md: https://shopify.dev/changelog/ui-extensions-shipping-method-option-list-targets-will-be-duplicated-for-possible-types-of-delivery-groups-one-time-purchases-and-subscription.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

December 6, 2023

Tags:

* Action Required
* API
* 2023-10

# UI Extensions - Shipping method option list targets will be duplicated for possible types of delivery groups (One Time Purchases and Subscription)

*Breaking change*: UI extensions on versions `2023-10` or older that use either the `purchase.checkout.shipping-option-list.render-before` or the `purchase.checkout.shipping-option-list.render-after` will no longer render if the checkout contains both a one time purchase and subscription item.

As of `2024-01`, `purchase.checkout.shipping-option-list.render-before` and `purchase.checkout.shipping-option-list.render-after` will be duplicated for possible types of delivery groups (One Time Purchase and Subscription). You can use the new [`ShippingOptionListApi`](https://shopify.dev/docs/api/checkout-ui-extensions/unstable/targets/shipping/purchase-checkout-shipping-option-list-render-before#shippingoptionlistapi) to target each delivery group in your extension.

The delivery group the extension is attached to will be passed as a `target`. In React, you can also use the `useDeliveryGroupTarget()` hook to retrieve the current delivery group. The target will be `undefined` if the group is not available, for example when the buyer hasn’t entered an address on One-page checkout, or when shipping is unavailable for this address.

We’re also introducing a new unique `id` on a `DeliveryGroup` to identify each delivery group.

If your extension is capturing buyer inputs at Checkout and storing the information in a metafield, you can use checkout attributes with a namespaced key to capture information for multiple delivery groups rendered on Checkout. [See examples](https://shopify.dev/docs/api/checkout-ui-extensions/unstable/targets/shipping/purchase-checkout-shipping-option-list-render-before#shippingoptionlistapi).

These changes can be tested today using the Checkout Extensibility developer preview using the `unstable` api version.

Learn more about these API changes on [shopify.dev](https://shopify.dev/docs/api/checkout-ui-extensions/unstable/targets/shipping/purchase-checkout-shipping-option-list-render-before#shippingoptionlistapi)