---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/70001#article
headline: "70001: Validation Failed"
url: https://www.twilio.com/docs/api/errors/70001
inLanguage: en
dateModified: 2026-03-11T22:03:37.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 70001: Validation Failed

Log Level: ERROR

## Description

The Request body is syntactically correct, the body was successfully parsed, but the data in the body violates the constraints.

### Possible causes

* Performing an update to the "FriendlyName" with a string longer than the allowed 64 characters.
* Updating a field that cannot have a null value to a null.