# cartBuyerIdentityUpdate - storefront - MUTATION
Version: 2024-10

## Description
Updates customer information associated with a cart.
Buyer identity is used to determine
[international pricing](https://shopify.dev/custom-storefronts/internationalization/international-pricing)
and should match the customer's shipping address.


### Access Scopes



## Arguments
* [buyerIdentity](/docs/api/storefront/2024-10/input-objects/CartBuyerIdentityInput): CartBuyerIdentityInput! - The customer associated with the cart. Used to determine
[international pricing](https://shopify.dev/custom-storefronts/internationalization/international-pricing).
Buyer identity should match the customer's shipping address.

* [cartId](/docs/api/storefront/2024-10/scalars/ID): ID! - The ID of the cart.


## Returns
* [cart](/docs/api/storefront/2024-10/objects/Cart): Cart The updated cart.
* [userErrors](/docs/api/storefront/2024-10/objects/CartUserError): CartUserError! The list of errors that occurred from executing the mutation.
* [warnings](/docs/api/storefront/2024-10/objects/CartWarning): CartWarning! A list of warnings that occurred during the mutation.


## Examples