---
title: CartPrepareForCompletionPayload - Storefront API
description: Return type for `cartPrepareForCompletion` mutation.
api_version: 2026-04
source_url:
  html: https://shopify.dev/docs/api/storefront/latest/payloads/CartPrepareForCompletionPayload
  md: https://shopify.dev/docs/api/storefront/latest/payloads/CartPrepareForCompletionPayload.md
---

# Cart​Prepare​For​Completion​Payload

payload

Return type for `cartPrepareForCompletion` mutation.

## Fields

* result

  [Cart​Prepare​For​Completion​Result](https://shopify.dev/docs/api/storefront/latest/unions/CartPrepareForCompletionResult)

  The result of cart preparation for completion.

* user​Errors

  [\[Cart​User​Error!\]!](https://shopify.dev/docs/api/storefront/latest/objects/CartUserError)

  non-null

  The list of errors that occurred from executing the mutation.

***

## Mutations with this payload

* [cart​Prepare​For​Completion](https://shopify.dev/docs/api/storefront/latest/mutations/cartPrepareForCompletion)

  mutation

  Prepare the cart for cart checkout completion.

  * cart​Id

    [ID!](https://shopify.dev/docs/api/storefront/latest/scalars/ID)

    required

    ### Arguments

    The ID of the cart.

  ***

***

## Map

### Mutations with this payload

* [cart​Prepare​For​Completion](https://shopify.dev/docs/api/storefront/latest/mutations/cartPrepareForCompletion)