> ## 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.

# CartSubmitInput

> The input fields required to submit a cart with the `submitCart` mutation. Provide the cart ID and billing address so Rye can place the order and initiate fulfillment. (Payment capture happens on your side before the cart is submitted.)

## Fields

<ParamField path="id" type={<>ID!</>} required>
  The ID of the cart that the user wants to submit for processing. It's a unique identifier for the cart in the system, and it's used to identify the cart that needs to be submitted.
</ParamField>

<ParamField path="billingAddress" type={<><a href="/api-reference/billingaddressinput">BillingAddressInput!</a></>} required>
  The `BillingAddressInput` object containing the billing address information.
</ParamField>

<ParamField path="selectedShippingOptions" type={<><a href="/api-reference/selectedshippingoption">[SelectedShippingOption!]</a></>}>
  The selected shipping options for each store. If multiple shipping options are selected for a store, the last one selected will be used. If a store in the cart already has a shipping option selected (via the `updateCartSelectedShippingOptions` mutation), the selection specified here will override the previous one.
</ParamField>

<ParamField path="cartSettings" type={<><a href="/api-reference/cartsettingsinput">CartSettingsInput</a></>}>
  Field to set cart settings on cart creation.
</ParamField>

<ParamField path="experimentalPromoCodes" type={<><a href="/api-reference/storepromocodesinput">[StorePromoCodesInput!]</a></>}>
  Represents promo codes applied per store see [`StorePromoCodesInput`](/api-reference/storepromocodesinput) for more details.
</ParamField>

<Warning>This field is experimental and might be changed or removed in the future.</Warning>

<Note>
  * Currently promo codes work only for Shopify stores through our Sell Anything API
  * Shopify stores support only one promo code per store
</Note>

### Mutations

* [`submitCart`](/api-reference/submitcart)

***

### Related types

* [`SubmitCartResult`](/api-reference/submitcartresult)
* [`BuyerIdentityInput`](/api-reference/buyeridentityinput)
* [`SelectedShippingOption`](/api-reference/selectedshippingoption)