# POS UI Extensions 1.7 Update: Support for multiple cart discounts — Shopify developer changelog
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## POS UI Extensions 1.7 Update: Support for multiple cart discounts

As of March 13, we added the following updates to POS UI Extensions: 

- Added a `discounts` property to the Cart object, which includes all cart discounts.
- Added `addCartCodeDiscount` to the Cart API, which allows the UI extension to add a code discount. The existing `applyCartDiscount` will still function for code discounts, too.
- Added `remove AllDiscounts` to the Cart API, which allows the UI extension to remove all cart discounts.
- Added a `listHeaderComponent` to the List component.


All of the changes are available for POS UI extensions version 1.7.0 and POS app version 9.4.0. See the [version log](https://shopify.dev/docs/api/pos-extensions/ui-extensions-reference/versions) for all version details.

*Published: March 13, 2024*
Tags: API, Update
Link: https://shopify.dev/changelog/pos-ui-extensions-1-7-update-support-for-multiple-cart-discounts

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