--- title: HasMetafieldsIdentifier - Customer API description: The input fields to identify a metafield on an owner resource by namespace and key. api_version: 2025-10 api_name: customer type: input-object api_type: graphql source_url: html: https://shopify.dev/docs/api/customer/latest/input-objects/hasmetafieldsidentifier md: https://shopify.dev/docs/api/customer/latest/input-objects/hasmetafieldsidentifier.md --- # Has​Metafields​Identifier input\_object The input fields to identify a metafield on an owner resource by namespace and key. ## Fields * key [String!](https://shopify.dev/docs/api/customer/latest/scalars/String) non-null The identifier for the metafield. * namespace [String!](https://shopify.dev/docs/api/customer/latest/scalars/String) non-null A container for a set of metafields. *** ## Map No referencing types