---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/420008#article
headline: "420008: File input failed"
url: https://www.twilio.com/docs/api/errors/420008
inLanguage: en
dateModified: 2026-04-01T03:32:01.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 420008: File input failed

Log Type: TWILIO

Log Level: ERROR

## Description

File did not pass content validation or was too large to process.

### Possible causes

* File upload contains unsupported formatting
* The payload exceeds the hard limits for a single ingestion request

### Possible solutions

* Re-upload file based on supported formats
* Split large files into smaller entries prior to submission