Define and set metafields on inventory transfers in the GraphQL Admin API

As of GraphQL Admin API version 2026-07 , you can define metafields for inventory transfers and set metafields directly when creating or editing transfers. Use MetafieldOwnerType.TRANSFER with metafield definition mutations to create transfer-specific metafield definitions. You can also pass metafields in the metafields input on the following mutations: inventoryTransferCreate inventoryTransferCreateAsReadyToShip inventoryTransferEdit Duplicating a transfer will also duplicates its metafields on inventoryTransferDuplicate .