---
title: "CheckoutLineItemUpdateInput"
description: "The line item information for updating the checkout."
doc_type: graphql
doc_category: storefront
doc_version: v20270301
source_url:
  html: 'https://developer.shopline.com/docs/storefront-api/checkouts/inputs/checkout-line-item-update-input'
  md: 'https://developer.shopline.com/docs/storefront-api/checkouts/inputs/checkout-line-item-update-input.md'
---
# CheckoutLineItemUpdateInput

The line item information for updating the checkout.

- **API Version:** v20270301
- **API Type:** Storefront
- **API Protocol:** GraphQL
- **Operation Type:** Input

## Input Fields

* `quantity`

  [Int](https://developer.shopline.com/docs/storefront-api/common/scalars/int.md)

  The product quantity.

* `variantId`

  [String](https://developer.shopline.com/docs/storefront-api/common/scalars/string.md)

  The variant ID.

* `id`

  [String!](https://developer.shopline.com/docs/storefront-api/common/scalars/string.md)

  The product ID.

* `properties`

  [[CheckoutLineItemPropertyInput]](https://developer.shopline.com/docs/storefront-api/checkouts/inputs/checkout-line-item-property-input.md)

  A list of product customization information.

## Argument from

* [Mutation](https://developer.shopline.com/docs/storefront-api/checkouts/mutations/checkout-line-items-update.md).checkoutLineItemsUpdate