---
title: "Update a line item"
method: PATCH
path: "/lineItems/{referenceLineItemID}"
tags: ["8. Line Items"]
---

# Update a line item

`PATCH /lineItems/{referenceLineItemID}`

## Path parameters

- `referenceLineItemID` string, required

## Request body

- UpdateLineItemRequest
  - `purchaseOrderNumber` string — The Purchase Order Number associated with this order.
  - `campaign` string — optional campaign that may be used to administratively categorize a specific order.
  - `orderNotes` string — Optional order notes (up to 150 characters)

## Response `202`

Accepted

- string

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `409` — Conflict; Duplicate Exists
- `422` — Unprocessable Entity

---

[API](https://skmtc.net/tangocard/apis/tango-api.md) · [All operations](https://skmtc.net/tangocard/apis/tango-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/tangocard/tango-api/versions/324ad9683921/schema)