Requested webhook not registered

I’m trying to create an n8n workflow that creates a vapi assistant. Everything seems to be in place, but I keep getting the following error message right from the triggering webhook:

{“code”:404,“message”:“The requested webhook "xxxxxxxxxx" is not registered.”,“hint”:“Click the ‘Test workflow’ button on the canvas, then try again. (In test mode, the webhook only works for one call after you click this button)”}

Not really sure what it refers to when it says the requested webhook is not registered. I mean, that’s the webhook vapi is calling to, and it’s set over in vapi’s settings.

Also, when I ttry to activate it, I’m getting the following message: Problem activating workflow. Please resolve outstading issues before activating.

This is the workflow:

Any help is greatly appreciated

It looks like your topic is missing some important information. Could you provide the following if applicable.

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

Sure… this is the missing info:

  • n8n version: 1.63.4
  • Running n8n via: cloud
  • Operating system: windows 11

Hope that’s all!

Just solved it. Something wasn’t working on vapi’s end and they kindly fixed that.