--- title: ProductVariantIdentifierInput - GraphQL Admin description: The input fields for identifying a product variant. api_version: unstable api_name: admin source_url: html: >- https://shopify.dev/docs/api/admin-graphql/unstable/input-objects/ProductVariantIdentifierInput md: >- https://shopify.dev/docs/api/admin-graphql/unstable/input-objects/ProductVariantIdentifierInput.md --- # Product​Variant​Identifier​Input input\_object The input fields for identifying a product variant. ## Fields * custom​Id [Unique​Metafield​Value​Input](https://shopify.dev/docs/api/admin-graphql/unstable/input-objects/UniqueMetafieldValueInput) The [custom ID](https://shopify.dev/docs/apps/build/custom-data/metafields/working-with-custom-ids) of the product variant. * id [ID](https://shopify.dev/docs/api/admin-graphql/unstable/scalars/ID) The ID of the product variant. *** ## Map No referencing types