---
title: 5004: attachment source bytes exceed the 100 MB request limit | API Docs
description: attachment source bytes exceed the 100 MB request limit
---

attachment source bytes exceed the 100 MB request limit. This is an HTTP 413: the payload is over a documented ceiling.

## Troubleshooting

- Check the file against the documented size and format limits for this field.
- For a source URL, confirm it is reachable, returns the declared content type, and is not behind auth.