---
title: MetafieldsSetUserError - Storefront API
description: An error that occurs during the execution of `MetafieldsSet`.
api_version: 2025-10
api_name: storefront
type: object
api_type: graphql
source_url:
  html: >-
    https://shopify.dev/docs/api/storefront/latest/objects/MetafieldsSetUserError
  md: >-
    https://shopify.dev/docs/api/storefront/latest/objects/MetafieldsSetUserError.md
---

# Metafields​Set​User​Error

object

An error that occurs during the execution of `MetafieldsSet`.

## Fields

* code

  [Metafields​Set​User​Error​Code](https://shopify.dev/docs/api/storefront/latest/enums/MetafieldsSetUserErrorCode)

  The error code.

* element​Index

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

  The index of the array element that's causing the error.

* field

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

  The path to the input field that caused the error.

* message

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

  non-null

  The error message.

***

## Map

No referencing types

***

## Mutations

* [cart​Metafields​Set](https://shopify.dev/docs/api/storefront/latest/mutations/cartMetafieldsSet)

  mutation

  Sets cart metafield values. Cart metafield values will be set regardless if they were previously created or not.

  Allows a maximum of 25 cart metafields to be set at a time.

***

## <\~> MetafieldsSetUserError Mutations

### Mutated by

* <\~>[cart​Metafields​Set](https://shopify.dev/docs/api/storefront/latest/mutations/cartMetafieldsSet)

***

## Interfaces

* [Displayable​Error](https://shopify.dev/docs/api/storefront/latest/interfaces/DisplayableError)

  interface

***

## ||-MetafieldsSetUserError Implements

### Implements

* ||-[Displayable​Error](https://shopify.dev/docs/api/storefront/latest/interfaces/DisplayableError)