---
title: "Item - Add Serial Numbers"
method: POST
path: "/item/add_serial_numbers"
tags: ["item"]
---

# Item - Add Serial Numbers

`POST /item/add_serial_numbers`

Add serial numbers to an item's inventory at a specific warehouse.

## Request body

- object
  - `item_id` string, required — Item ID
  - `serial_numbers` string[], required — Serial numbers to add
  - `no_refresh` boolean — Skip cache refresh
  - `sku` string — Item SKU (alternative lookup)
  - `lot_count` number — Lot count
  - `lot_prefix` string — Lot prefix

## Response `200`

Serial numbers added

- object
  - `success` boolean, required — Whether the operation succeeded
  - `serial_numbers` string[] — Serial numbers that were added

## Other responses

- `400` — Bad request
- `401` — Unauthorized
- `403` — Forbidden. Insufficient permissions.
- `429` — Too many requests. Rate limit exceeded.
- `500` — Internal server error.

## Changes

- **2026-03-02** `fa53dd949b8e` — 3 breaking, 7 info
  - the request property `item_id` became required
  - the request property `serial_numbers` became required
  - the `lot_count` request property type/format changed from `string`/`` to `number`/``
  - api operation id `post_item_add_serial_numbers` was added
  - …6 more
- **2024-04-23** `e4bdf6984278` — 2 info
  - added the new optional request property `lot_count`
  - added the new optional request property `lot_prefix`
- **2024-04-22** `08cd9cfa14dd` — 1 breaking, 4 warning, 2 info
  - added required request body
  - deleted the `query` request parameter `item_id`
  - deleted the `query` request parameter `no_refresh`
  - deleted the `query` request parameter `serial_numbers`
  - …3 more
- **2024-04-19** `46ceda528000` — 2 breaking, 10 info
  - removed the request body
  - removed the media type `application/json` for the response with the status `200`
  - api operation id `post_item_add_serial_numbers` removed and replaced with ``
  - added the new optional `query` request parameter `item_id`
  - …8 more

[Change history](https://skmtc.dev/skulabs/apis/skulabs-api/changes/item/add_serial_numbers/post.md)

---

[API](https://skmtc.dev/skulabs/apis/skulabs-api.md) · [All operations](https://skmtc.dev/skulabs/apis/skulabs-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/skulabs/skulabs-api/revisions/4b5ec0ed78a6/schema)