---
title: CustomerSetIdentifiers - GraphQL Admin
description: The input fields required to identify a customer.
api_version: 2026-10
source_url:
  html: >-
    https://shopify.dev/docs/api/admin-graphql/latest/input-objects/CustomerSetIdentifiers
  md: >-
    https://shopify.dev/docs/api/admin-graphql/latest/input-objects/CustomerSetIdentifiers.md
api_name: admin
api_type: graphql
type: input-object
---

# Customer​Set​Identifiers

input\_object

The input fields required to identify a customer.

## Fields

* custom​Id

  [Unique​Metafield​Value​Input](https://shopify.dev/docs/api/admin-graphql/latest/input-objects/UniqueMetafieldValueInput)

  Custom ID of customer to upsert.

* email

  [String](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  Email address of the customer to upsert.

* id

  [ID](https://shopify.dev/docs/api/admin-graphql/latest/scalars/ID)

  ID of customer to update.

* phone

  [String](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  Phone number of the customer to upsert.

***

## Mutations using this input

* [customer​Set.identifier](https://shopify.dev/docs/api/admin-graphql/latest/mutations/customerSet#arguments-identifier)

  ARGUMENT

***

## Map

### Mutations using this input

* [customer​Set.identifier](https://shopify.dev/docs/api/admin-graphql/latest/mutations/customerSet#arguments-identifier)