What it means
The request conflicts with the current state of the resource. Client errors mean the request cannot be fulfilled as sent. The server is working, but the address, permission or request rate is the problem.
Common causes
Edit conflicts, duplicate creation.
How to fix it
Refetch the resource and retry with up-to-date data.
If you are a visitor
Check the address for typos, sign in if the page needs it, and try again. If you believe the page should exist, tell the site owner.
If you own the site
Retrying the same request will not help until you change something (URL, credentials or timing). URLs that keep returning 404 or 410 are dropped from search results over time. 429 and 403 can block crawlers if they are too aggressive or blocked by a firewall. Run the HTTP status checker to see exactly what your URL returns, and use uptime monitoring to be told when it changes.
Frequently asked questions
What does HTTP 409 mean?
Conflict: The request conflicts with the current state of the resource.
Is HTTP 409 an error?
Yes. Client errors mean the request cannot be fulfilled as sent. The server is working, but the address, permission or request rate is the problem.
Does HTTP 409 affect SEO?
URLs that keep returning 404 or 410 are dropped from search results over time. 429 and 403 can block crawlers if they are too aggressive or blocked by a firewall.
Should I retry after HTTP 409?
Retrying the same request will not help until you change something (URL, credentials or timing).