# CartBuyerIdentityUpdatePayload

Payload returned by the cartBuyerIdentityUpdate mutation.

## Type Definition

```graphql
type CartBuyerIdentityUpdatePayload {
  cart: Cart
  userErrors: [UserError]!
}
```

## Fields

| Field | Type | Description |
|-------|------|-------------|
| cart | Cart | The updated cart |
| userErrors | [UserError]! | List of errors that occurred during cart buyer identity update |

## Relationships

The `CartBuyerIdentityUpdatePayload` type is returned by the `cartBuyerIdentityUpdate` mutation. It contains a reference to the `Cart` object that was updated, as well as any `UserError` objects that occurred during the operation.

## Example

```graphql
{
  cartBuyerIdentityUpdate(cartId: "eyJhbGciOiJIUzI1NiJ9...") {
    cart {
      id
    }
    userErrors {
      field
      message
    }
  }
}
```

## Implements

This type does not implement any interfaces.

## Related Types

- [Cart](/reference/storefront/1.3.0/objects/cart)
- [UserError](/reference/storefront/1.3.0/objects/user-error)