> ## Documentation Index
> Fetch the complete documentation index at: https://docs-test.rye.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# CartBuyerIdentityUpdateInput

> The input fields to provide the necessary information to update the buyer identity associated with a cart through the `updateCartBuyerIdentity` mutation. By providing the cart ID and the updated buyer identity information, the API can update the cart's buyer identity accordingly.

## Fields

<ParamField path="id" type={<>ID!</>} required>
  The ID of the cart that the user wants to update the buyer identity for.
</ParamField>

<ParamField path="buyerIdentity" type={<><a href="/api-reference/buyeridentityinput">BuyerIdentityInput</a></>}>
  The `BuyerIdentityInput` object containing the updated buyer identity information.
</ParamField>

## Mutations

* [`updateCartBuyerIdentity`](/api-reference/updatecartbuyeridentity)

## Related types

* [`BuyerIdentityInput`](/api-reference/buyeridentityinput)
* [`CartResponse`](/api-reference/cartresponse)