---
title: MetafieldReferencer - GraphQL Admin
description: Types of resources that may use metafields to reference other resources.
api_version: unstable
api_name: admin
source_url:
  html: >-
    https://shopify.dev/docs/api/admin-graphql/unstable/unions/MetafieldReferencer
  md: >-
    https://shopify.dev/docs/api/admin-graphql/unstable/unions/MetafieldReferencer.md
---

# Metafield​Referencer

union

Types of resources that may use metafields to reference other resources.

## Fields with this union

* [Metafield​Relation.referencer](https://shopify.dev/docs/api/admin-graphql/unstable/objects/MetafieldRelation#field-MetafieldRelation.fields.referencer)

  OBJECT

  Defines a relation between two resources via a reference metafield. The referencer owns the joining field with a given namespace and key, while the target is referenced by the field.

***

```graphql
union MetafieldReferencer = AppInstallation | Article | Blog | Collection | Company | CompanyLocation | Customer | DeliveryCustomization | DiscountAutomaticNode | DiscountCodeNode | DiscountNode | DraftOrder | FulfillmentOrder | Location | Market | Metaobject | Order | Page | PaymentCustomization | Product | ProductVariant | Shop
```