IndexNow 429: Too Many Requests
Reduce IndexNow request volume with deduplication, sitemap diffs, batching, and backoff.
Updated September 2, 2026
Why it happens
Repeated full-sitemap submissions, duplicate URLs, parallel retries, and multiple integrations can exceed the endpoint's current allowance.
Reduce volume
- Submit changes only
- Compare sitemap snapshots and send added or genuinely modified URLs.
- Coordinate publishers
- Ensure the CMS plugin, deploy hook, and manual tool do not submit the same change.
- Back off
- Use exponential backoff with jitter and cap retries.
Do not
Do not rotate keys, change IP addresses, or retry continuously. Those actions do not fix the underlying request volume.