---
title: "Update PO number"
method: PUT
path: "/api/billing/po-number"
tags: ["internal"]
---

# Update PO number

`PUT /api/billing/po-number`

## Request

- Base URL: `https://app.scanopy.net`
- URL: `https://app.scanopy.net/api/billing/po-number`
- Auth: one of:
  - API key in header `Authorization`
  - API key in cookie `session_id`

Replaces the purchase order number printed on this organization's future
invoices, for a renewal raised against a new PO.

## Request body

- UpdatePoNumberRequest: Replace the purchase order number printed on future invoices.
  - `po_number` string, nullable: New PO number; empty or absent removes it.

## Response `200`

PO number updated

- ApiResponse: Envelope for a successful response. Failures are sent with a non-2xx status and an `ApiErrorResponse` body instead.
  - `data` TupleUnit: No payload. Present only so the envelope keeps its shape.
  - `error` string, nullable: Not sent on a successful response. Failure messages arrive in an `ApiErrorResponse`.
  - `meta` ApiMeta, required: API metadata included in all responses
    - `api_version` integer, required: API version (integer, increments on breaking changes)
    - `server_version` string, required: Server version (semver)
  - `success` boolean, required: Always `true` on a successful response.

## Other responses

- `400`: Not a self-hosted plan or billing not enabled

## Changes

- **2026-10-26** `c9d9d46d1ae8`: 1 info
  - api tag `billing` removed
- **2026-09-24** `7a30dff58ddd`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/scanopy/apis/scanopy-api/changes/api/billing/po-number/put.md)

---

[API](https://skmtc.dev/scanopy/apis/scanopy-api.md) - [All operations](https://skmtc.dev/scanopy/apis/scanopy-api/llms.txt) - [OpenAPI document](https://skmtc.dev/scanopy/apis/scanopy-api/revisions/966ba786bdb5?raw)