Request failed with status code 431

Questions
1

Describe the problem/error/question

What is the error message (if any)?

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last node

Information on your n8n setup

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
2

If you want your questions answered, write clearly.

What is the workflow that is giving such issue?

3

welcome to the n8n community @NAACH_LIFE !

This error usually means the request is being rejected before the workflow can complete, because one or more HTTP headers are too large. In my experience, this is often caused by very large cookies, auth headers, or proxy/ingress headers rather than the workflow logic itself.
If this is happening on a webhook, I’d also check whether there is a reverse proxy in front of n8n, since Nginx, Traefik, and similar setups can return 431 when header size limits are exceeded.

Could you please share ideally the workflow JSON or a minimal repro?

4

Hey, can you share some more details? Like what node is throwing the 431 error, what version of n8n you’re on and maybe a screenshot of the workflow — hard to troubleshoot without seeing whats going on.