> ## Documentation Index
> Fetch the complete documentation index at: https://developers.redo.com/llms.txt
> Use this file to discover all available pages before exploring further.
# updateDiscountCode
> Update a discount code. Returns null if no code with that id is owned by the caller.
**Required scopes:** [`campaigns_write`](/docs/api-reference/v3/reference/scopes#scope-campaigns_write)
## Arguments
The discount code's `id`, or its `legacyId` from an earlier version of the Redo API.
UpdateDiscountCodeInput!} required>
The fields to change.
The code customers enter at checkout.
DiscountCodeExpirationInput}>
When the code stops working.
DateTime}>
Required when `type` is ON\_DATE.
Required when `type` is AFTER\_DAYS.
DiscountCodeExpirationInputType!} required>
Whether the code never expires, expires on a date, or after a number of days.
DiscountCodeGroupType}>
Must be STATIC. DYNAMIC is not supported.
DiscountCodeSettingsInput}>
Replace how the discount reduces the order. Pass exactly one of amountOff, freeShipping, or buyXGetY.
AmountOffDiscountSettingsInput}>
A percent-off or amount-off discount.
BuyXGetYDiscountSettingsInput}>
A buy-X-get-Y discount.
FreeShippingDiscountSettingsInput}>
A free-shipping discount.
The merchant-facing name of the discount.
## Returns
DiscountCode}>
A discount configuration hosted on Shopify or BigCommerce.
The code customers enter at checkout.
DateTime}>
When the discount was created.
A short human-readable summary of what the code does.
DiscountCodeExpiration!} required>
When this code stops working.
DateTime}>
The expiry instant when `type` is ON\_DATE.
Days after creation when `type` is AFTER\_DAYS.
DiscountCodeExpirationType!} required>
Whether the code never expires, expires on a date, after a number of days, or on delivery.
The platform's id for this discount (a Shopify GID or a BigCommerce promotion id).
DiscountCodeGroupType!} required>
Whether this is one fixed code or a unique code per customer.
The id of this discount code.
DiscountCodeKind}>
How the discount reduces the order. Null when the config has no settings type.
The discount's legacy Mongo ObjectId (24-char hex) from before the CockroachDB migration.
DiscountCodeProvider!} required>
The commerce platform that hosts this code.
DiscountCodeSettings}>
How the discount reduces the order.
The merchant-facing name of the discount.
DateTime}>
When the discount was last edited.
## Example
```graphql theme={null}
mutation {
updateDiscountCode(id: "...", input: { ... }) {
code
createdAt
description
externalId
groupType
id
kind
legacyId
# ...
}
}
```
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