---
title: "Update invoice note"
method: PATCH
path: "/v2/billing/invoices/{id}/note"
tags: ["Billing"]
---

# Update invoice note

`PATCH /v2/billing/invoices/{id}/note`

Updates only the note field of an invoice. This operation is allowed even for COMPLETE invoices.

**Note:** This endpoint returns 204 No Content on success. No invoice data is returned.

## Path parameters

- `id` integer, required

## Response `204`

Invoice note updated successfully - No content returned

## Other responses

- `400` — Bad Request - Invoice status does not allow modification
- `403` — Forbidden - Insufficient permissions
- `404` — Invoice not found

---

[API](https://skmtc.net/ninjarmm/apis/ninjaone-public-api-2-0.md) · [All operations](https://skmtc.net/ninjarmm/apis/ninjaone-public-api-2-0/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ninjarmm/ninjaone-public-api-2-0/versions/753f26d46650/schema)