---
title: "Changes to Preflight check before upload"
method: OPTIONS
path: "/files/content"
---

# Changes to Preflight check before upload

`OPTIONS /files/content`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `c4d5303fa5c3`: 2 warning

## Changes

- **2026-11-03** `c4d5303fa5c3`: 2 warning
  - added the new `unprocessable_entity` enum value to the `allOf[subschema #1: Client error]/code` response property for the response status `409`
  - added the new `unprocessable_entity` enum value to the `code` response property for the response status `default`

---

[Operation](https://skmtc.dev/box/apis/platform-api/docs/files/content/options.md) - [API](https://skmtc.dev/box/apis/platform-api.md) - [Page](https://skmtc.dev/box/apis/platform-api/changes/files/content/options)