---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/420023#article
headline: "420023: Invalid knowledge base identifier"
url: https://www.twilio.com/docs/api/errors/420023
inLanguage: en
dateModified: 2026-07-29T18:16:50.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 420023: Invalid knowledge base identifier

Log Type: TWILIO

Log Level: ERROR

## Description

The supplied knowledge base ID is not a valid knowledge base identifier.

### Possible causes

* The knowledge base ID is not a well-formed TTID.
* The TTID belongs to a different domain or resource type.

### Possible solutions

* Use the identifier of an existing knowledge base.