---
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headline: "12400: Internal Failure"
url: https://www.twilio.com/docs/api/errors/12400
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 12400: Internal Failure

Log Level: ERROR

## Description

An internal error has occurred that prevented Twilio from processing your response.

### Possible causes

* We screwed up. Sorry!

### Possible solutions

* If the error persists, please [contact us](/help/contact) to figure out what has happened and how to fix it.
* Note the time of the error and what you were trying to do when it occurred.