I tried connecting number from twillo to Vapi, and every time i call it im getting Application error, and i see this in Twillo logs: Message Got HTTP 404 response to https://api.vapi.ai/twilio/voice Error Description We try to provide specific webhook errors whenever possible, however in this instance we are unable to identify the exact cause of the webhook delivery/response issue. To prevent 11200 errors, ensure that your webhook receiving infrastructure can quickly respond to inbound Twilio requests with a 2xx status code.

Thanks for sharing those details! I couldn't find enough info in the docs to solve the 404 error you're seeing when connecting your Twilio number to Vapi. I'm escalating this to a human teammate so we can get you a proper answer. In the meantime, you might want to double-check your Twilio SIP trunk and Vapi configuration steps, just in case something was missed. Here are some helpful links if you want to review: - [Twilio SIP Integration Guide](https://docs.vapi.ai/advanced/sip/twilio) - [Importing Twilio Numbers](https://docs.vapi.ai/quickstart/import-twillio) - [Setting up Server URLs / Webhooks](https://docs.vapi.ai/server-url) Hang tight—someone from the team will follow up soon!

Please ensure this number is configured correctly on the Vapi side. Hey, You can check out this guide: for details on integration. Note: This is a standard guide used by many telephony providers, so it should be helpful.

Hello, this number was bought a long time ago thru Vapi, so it should be configured, and I only need inbound. I fixed that bug, I had GET set instead of POST on the webhook, but now I have a problem, when I call it is an application error, and in twillo logs I see the status: no answer, as if vapi did not give an answer?

Can you send the phone number id, and the request from the webhook that is getting the error?

phone number id from vapi: 0350f2e1-d522-4ee5-91ce-147e00721f19 And webhook settings in photo https://cdn.discordapp.com/attachments/1380617012442824754/1380940139735552132/Zrzut_ekranu_2025-06-7_o_18.02.35.png?ex=6845b439&is=684462b9&hm=861b52669f8d16d7d3949747c2fed9204c25aeabf61f9185f4383a52cbb128f5&

Glad the issue was resolved. Please reach out to us if you have any other questions regarding this issue