---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/420032#article
headline: "420032: Knowledge source rate limit exceeded"
url: https://www.twilio.com/docs/api/errors/420032
inLanguage: en
dateModified: 2026-07-29T18:16:50.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 420032: Knowledge source rate limit exceeded

Log Type: TWILIO

Log Level: ERROR

## Description

The web crawler received a `429 Too Many Requests` response when attempting to access the target URL during knowledge ingestion. The target server is rate limiting or throttling requests from the crawler.

### Possible causes

* The target site has rate limits that the crawler exceeded
* The site detected automated crawling and blocked further requests
* Too many pages were crawled in a short time period
* The target site's API or CDN has request quotas
* Anti-bot protection is limiting crawler access

### Possible solutions

* Reduce the crawl depth to limit the number of pages crawled
* Increase the crawl period to spread requests over a longer time
* Contact the target site administrator to allowlist Twilio's crawler
* If rate limiting persists, download the content manually and upload as files
* The crawler will automatically retry on the next scheduled crawl period
* Review the knowledge source error details in the Twilio Console