---
title: useApplyDiscountCodeChange
description: >-
  Returns a function to add or remove discount codes.


  > Caution:

  > See [security
  considerations](/docs/api/checkout-ui-extensions/configuration#network-access)
  if your extension retrieves discount codes through a network call.
api_version: 2023-07
api_name: checkout-ui-extensions
source_url:
  html: >-
    https://shopify.dev/docs/api/checkout-ui-extensions/2023-07/react-hooks/reductions/useapplydiscountcodechange
  md: >-
    https://shopify.dev/docs/api/checkout-ui-extensions/2023-07/react-hooks/reductions/useapplydiscountcodechange.md
---

# use​Apply​Discount​Code​Change

Returns a function to add or remove discount codes.

**Caution:** See \<a href="/docs/api/checkout-ui-extensions/configuration#network-access">security considerations\</a> if your extension retrieves discount codes through a network call.

## use​Apply​Discount​Code​Change()

### Returns

* **(change: DiscountCodeChange) => Promise\<DiscountCodeChangeResult>**

### DiscountCodeChange

```ts
DiscountCodeAddChange | DiscountCodeRemoveChange
```

### DiscountCodeAddChange

* type

  The type of the \`DiscountCodeChange\` API.

  ```ts
  "addDiscountCode"
  ```

* code

  The code for the discount

  ```ts
  string
  ```

### DiscountCodeRemoveChange

* type

  The type of the \`DiscountCodeChange\` API.

  ```ts
  "removeDiscountCode"
  ```

* code

  The code for the discount

  ```ts
  string
  ```

### DiscountCodeChangeResult

```ts
DiscountCodeChangeResultSuccess | DiscountCodeChangeResultError
```

### DiscountCodeChangeResultSuccess

* type

  Indicates that the discount code change was applied successfully.

  ```ts
  "success"
  ```

### DiscountCodeChangeResultError

* type

  Indicates that the discount code change failed.

  ```ts
  "error"
  ```

* message

  A message that explains the error. This message is useful for debugging. It is \*\*not\*\* localized, and therefore should not be presented directly to the buyer.

  ```ts
  string
  ```

## Related

[APIs - StandardApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/standardapi)

[APIs - CheckoutApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/checkoutapi)

[APIs - OrderStatusApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/orderstatusapi)

[APIs - CartLineItemApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/cartlineitemapi)

[APIs - PickupPointListApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/pickuppointlistapi)

[APIs - PickupLocationListApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/pickuplocationlistapi)

[APIs - ShippingOptionItemApi](https://shopify.dev/docs/api/checkout-ui-extensions/apis/shippingoptionitemapi)

[APIs - ExtensionTargets](https://shopify.dev/docs/api/checkout-ui-extensions/apis/extensiontargets)