---
title: "Changes to Update a Fax Application"
method: PATCH
path: "/fax_applications/{id}"
---

# Changes to Update a Fax Application

`PATCH /fax_applications/{id}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 2 of 61 revisions.

- **2026-08-17** `1571b0380bd7` — 2 breaking, 1 info
- **2026-08-04** `8f5f4e537994` — 2 breaking

## Changes

- **2026-08-17** `1571b0380bd7` — 2 breaking, 1 info
  - the `errors/items/code` response's property type/format changed from `integer`/`int32` to `string`/`` for status `404`
  - the `errors/items/code` response's property type/format changed from `integer`/`int32` to `string`/`` for status `422`
  - added the non-success response with the status `409`
- **2026-08-04** `8f5f4e537994` — 2 breaking
  - the `errors/items/code` response's property type/format changed from `string`/`` to `integer`/`int32` for status `404`
  - the `errors/items/code` response's property type/format changed from `string`/`` to `integer`/`int32` for status `422`

---

[Operation](https://skmtc.dev/team-telnyx/apis/telnyx-api-2/docs/fax_applications/:id/patch.md) · [API](https://skmtc.dev/team-telnyx/apis/telnyx-api-2.md) · [Page](https://skmtc.dev/team-telnyx/apis/telnyx-api-2/changes/fax_applications/:id/patch)