---
title: "Changes to Add file to a matter"
method: POST
path: "/matters/{matterId}/documents/files"
---

# Changes to Add file to a matter

`POST /matters/{matterId}/documents/files`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 15 revisions.

- **2026-08-26** `db1b8a86b58e`: 1 breaking, 5 warning

## Changes

- **2026-08-26** `db1b8a86b58e`: 1 breaking, 5 warning
  - the response's body type changed from `object` to `string` for status `400`
  - removed the optional property `detail` from the response with the `400` status
  - removed the optional property `instance` from the response with the `400` status
  - removed the optional property `status` from the response with the `400` status
  - removed the optional property `title` from the response with the `400` status
  - removed the optional property `type` from the response with the `400` status

---

[Operation](https://skmtc.dev/smokeball/apis/smokeball-api/docs/matters/:matterId/documents/files/post.md) - [API](https://skmtc.dev/smokeball/apis/smokeball-api.md) - [Page](https://skmtc.dev/smokeball/apis/smokeball-api/changes/matters/:matterId/documents/files/post)