---
title: cartNoteUpdate - Storefront API
description: |-
  Updates the note on a
  [`Cart`](/docs/api/storefront/2026-10/objects/Cart). The
  note is a text field that stores additional information, such as a
  personalized message from the buyer or special instructions for the order.
api_version: 2026-10
source_url:
  html: 'https://shopify.dev/docs/api/storefront/latest/mutations/cartNoteUpdate'
  md: 'https://shopify.dev/docs/api/storefront/latest/mutations/cartNoteUpdate.md'
api_name: storefront
api_type: graphql
type: mutation
---

# cart​Note​Update

mutation

Updates the note on a [`Cart`](https://shopify.dev/docs/api/storefront/2026-10/objects/Cart). The note is a text field that stores additional information, such as a personalized message from the buyer or special instructions for the order.

## Arguments

* cart​Id

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

  required

  The ID of the cart.

* note

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

  required

  The note on the cart.

***

## Cart​Note​Update​Payload returns

* cart

  [Cart](https://shopify.dev/docs/api/storefront/latest/objects/Cart)

  The updated cart.

* 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.

* warnings

  [\[Cart​Warning!\]!](https://shopify.dev/docs/api/storefront/latest/objects/CartWarning)

  non-null

  A list of warnings that occurred during the mutation.

***

## Examples

* ### cartNoteUpdate reference