---
title: inventoryShipmentAddItems - GraphQL Admin
description: |-
  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/usage/idempotent-requests).
api_version: 2025-07
api_name: admin
type: mutation
api_type: graphql
source_url:
  html: https://shopify.dev/docs/api/admin-graphql/2025-07/mutations/inventoryshipmentadditems
  md: https://shopify.dev/docs/api/admin-graphql/2025-07/mutations/inventoryshipmentadditems.md
---

# inventory​Shipment​Add​Items

mutation

Requires `write_inventory_shipments` access scope. Also: The user must have permission to manage inventory.

Adds items to an inventory shipment.

***

**Caution:** As of 2026-01, this mutation supports an optional idempotency key using the \<code>@idempotent\</code> directive. As of 2026-04, the idempotency key is required and must be provided using the \<code>@idempotent\</code> directive. For more information, see the \<a href="https://shopify.dev/docs/api/usage/idempotent-requests">idempotency documentation\</a>.

***

## Arguments

* id

  [ID!](https://shopify.dev/docs/api/admin-graphql/2025-07/scalars/ID)

  required

  The ID of the inventory shipment to modify.

* line​Items

  [\[Inventory​Shipment​Line​Item​Input!\]!](https://shopify.dev/docs/api/admin-graphql/2025-07/input-objects/InventoryShipmentLineItemInput)

  required

  The list of line items to add to the inventory shipment.

***

## Inventory​Shipment​Add​Items​Payload returns

* added​Items

  [\[Inventory​Shipment​Line​Item!\]](https://shopify.dev/docs/api/admin-graphql/2025-07/objects/InventoryShipmentLineItem)

  The list of added line items.

* inventory​Shipment

  [Inventory​Shipment](https://shopify.dev/docs/api/admin-graphql/2025-07/objects/InventoryShipment)

  The inventory shipment with the added items.

* user​Errors

  [\[Inventory​Shipment​Add​Items​User​Error!\]!](https://shopify.dev/docs/api/admin-graphql/2025-07/objects/InventoryShipmentAddItemsUserError)

  non-null

  The list of errors that occurred from executing the mutation.

***

## Examples

* ### inventoryShipmentAddItems reference