---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/420030#article
headline: "420030: Knowledge source URL not found"
url: https://www.twilio.com/docs/api/errors/420030
inLanguage: en
dateModified: 2026-07-29T18:16:50.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 420030: Knowledge source URL not found

Log Type: TWILIO

Log Level: ERROR

## Description

The web crawler received a `404 Not Found` response when attempting to access the target URL during knowledge ingestion. The requested resource does not exist on the target server.

### Possible causes

* The URL no longer exists
* The URL path is incorrect
* The target site has removed or renamed the content
* The page was temporarily unavailable during crawling
* The URL structure changed after the knowledge source was created

### Possible solutions

* Verify the URL is correct and accessible in a web browser
* Check if the content has moved to a new URL and update your knowledge source
* Remove the knowledge source if the content is permanently unavailable
* If the URL is correct but temporarily unavailable, the crawler will retry on the next scheduled crawl
* Review the knowledge source error details in the Twilio Console for specific URLs that failed