--- title: InventoryShipmentAddItemsPayload - GraphQL Admin description: Return type for `inventoryShipmentAddItems` mutation. api_version: unstable api_name: admin source_url: html: https://shopify.dev/docs/api/admin-graphql/unstable/payloads/inventoryshipmentadditemspayload md: https://shopify.dev/docs/api/admin-graphql/unstable/payloads/inventoryshipmentadditemspayload.md --- # Inventory​Shipment​Add​Items​Payload payload Return type for `inventoryShipmentAddItems` mutation. ## Fields * added​Items [\[Inventory​Shipment​Line​Item!\]](https://shopify.dev/docs/api/admin-graphql/unstable/objects/InventoryShipmentLineItem) The list of added line items. * inventory​Shipment [Inventory​Shipment](https://shopify.dev/docs/api/admin-graphql/unstable/objects/InventoryShipment) The inventory shipment with the added items. * user​Errors [\[Inventory​Shipment​Add​Items​User​Error!\]!](https://shopify.dev/docs/api/admin-graphql/unstable/objects/InventoryShipmentAddItemsUserError) non-null The list of errors that occurred from executing the mutation. *** ## Mutations with this payload * [inventory​Shipment​Add​Items](https://shopify.dev/docs/api/admin-graphql/unstable/mutations/inventoryShipmentAddItems) mutation Adds items to an inventory shipment. *** Caution As of 2026-01, this mutation supports an optional idempotency key using the `@idempotent` directive. As of 2026-04, the idempotency key is required and must be provided using the `@idempotent` directive. For more information, see the [idempotency documentation](https://shopify.dev/docs/api/admin/idempotency). *** * id [ID!](https://shopify.dev/docs/api/admin-graphql/unstable/scalars/ID) required ### Arguments The ID of the inventory shipment to modify. * line​Items [\[Inventory​Shipment​Line​Item​Input!\]!](https://shopify.dev/docs/api/admin-graphql/unstable/input-objects/InventoryShipmentLineItemInput) required The list of line items to add to the inventory shipment. *** *** ## Map ### Mutations with this payload * [inventory​Shipment​Add​Items](https://shopify.dev/docs/api/admin-graphql/unstable/types/inventoryShipmentAddItems)