Inbound calls to imported Twilio phone number is f...
# supportd
daniyar.chambylov
05/09/2025, 5:07 AMI have a phone number which I purchased from Twilio and have been using it to make outbound calls in the app via TwiML app configuration.
Now we're looking into possibilities to make inbound calls answered by AI assistant.
Steps I did:
1. I've detached the number from the previous TwiML app configuration and cleared everything under webhooks.
2. Imported phone number via VAPI dashboard (even tried via API). Phone number is successfully imported into VAPI
3. Assigned assistant to the imported phone number
4. Double checked that Twilio phone number has correct webhook https://api.vapi.ai/twilio/inbound_call and https://api.vapi.ai/twilio/status for statuses.
When I call to the phone number, it fails with "Your server rejected
assistant-requestv
Vapi Support Bot
05/09/2025, 5:07 AMThanks for sharing the detailed steps you've taken and the error message you're seeing. From what you've described, it looks like you've set up the webhooks correctly and assigned the assistant, but the inbound call to the Vapi webhook is returning a 404 error and there are no logs appearing in the Vapi dashboard. At this time, I don't have access to specific information or documentation that explains why this 404 error is occurring or what additional steps might resolve it. If you have any more details or changes in behavior, feel free to share them.
Vapi Support Bot
05/09/2025, 5:07 AMThanks for sharing the detailed steps you've taken and the error message you're seeing. From what you've described, it looks like you've set up the webhooks correctly and assigned the assistant, but the inbound call to the Vapi webhook is returning a 404 error and there are no logs appearing in the Vapi dashboard. At this time, I don't have access to specific information or documentation that explains why this 404 error is occurring or what additional steps might resolve it. If you have any more details or changes in behavior, feel free to share them.
Vapi Support Bot
05/09/2025, 5:07 AMThanks for sharing the detailed steps you've taken and the error message you're seeing. From what you've described, it looks like you've set up the webhooks correctly and assigned the assistant, but the inbound call to the Vapi webhook is returning a 404 error and there are no logs appearing in the Vapi dashboard. At this time, I don't have access to specific information or documentation that explains why this 404 error is occurring or what additional steps might resolve it. If you have any more details or changes in behavior, feel free to share them.
Vapi Support Bot
05/09/2025, 5:07 AMThanks for sharing the detailed steps and configuration you've set up for your Twilio number and VAPI integration. From what you've described, it looks like you've correctly detached the number from previous configurations, imported it into VAPI, assigned an assistant, and set the webhook URLs as required. The 404 error message on the
https://api.vapi.ai/twilio/inbound_callVapi Support Bot
05/09/2025, 5:07 AMThanks for sharing the detailed steps and configuration you've set up for your Twilio number and VAPI integration. From what you've described, it looks like you've correctly detached the number from previous configurations, imported it into VAPI, assigned an assistant, and set the webhook URLs as required. The 404 error message on the
https://api.vapi.ai/twilio/inbound_callVapi Support Bot
05/09/2025, 5:07 AMThanks for providing such a detailed description of your setup and the steps you've taken. From what you've shared, it looks like you've correctly configured your Twilio number and set the webhook URLs as required. The 404 error on the
https://api.vapi.ai/twilio/inbound_callVapi Support Bot
05/09/2025, 5:07 AMThanks for sharing the detailed steps and configuration you've set up for your Twilio number and VAPI integration. From what you've described, it looks like you've correctly detached the number from previous configurations, imported it into VAPI, assigned an assistant, and set the webhook URLs as required. The 404 error message on the
https://api.vapi.ai/twilio/inbound_callVapi Support Bot
05/09/2025, 5:07 AMThanks for providing such a detailed description of your setup and the steps you've taken. From what you've shared, it looks like you've correctly configured your Twilio number and set the webhook URLs as required. The 404 error on the
https://api.vapi.ai/twilio/inbound_callVapi Support Bot
05/09/2025, 5:07 AMThanks for providing such a detailed description of your setup and the steps you've taken. From what you've shared, it looks like you've correctly configured your Twilio number and set the webhook URLs as required. The 404 error on the
https://api.vapi.ai/twilio/inbound_calld
daniyar.chambylov
05/09/2025, 10:39 AMTried setting up via Twilio SIP guide and have same error message
k
Kings_big💫
05/09/2025, 10:43 AMTo help track down this issue, could you share one or two:
- The call ID
- When exactly this happened (the timestamp)
- What response you expected to get
- What response you actually got instead
This would really help us figure out what went wrong!
d
daniyar.chambylov
05/09/2025, 10:49 AM@Kings_big💫
- Call ID: there is none, I don't see any requests in VAPI dashboard
- Time: 2025-05-09 10:34:47 UTC
- Assistant pickup inbound call
- An automated reply: "Your server rejected
assistant-requestk
Kings_big💫
05/09/2025, 11:31 AMLooking into it
s
Sullidor
05/09/2025, 3:15 PMI have the same problem and contacted support by email. You can get some information from the report from Twilio. This information may help to narrow down the problem.
d
daniyar.chambylov
05/09/2025, 6:37 PMDo you mean contact Twilio support for more insight? Twilio call itself is marked as completed, but the TwiML response contains error message
Copy code
<Response>
<Say>Your server rejected `assistant-request` webhook. Error: Request failed with status code 404</Say>
</Response>s
Shubham Bajaj
05/09/2025, 10:38 PM@daniyar.chambylov @Sullidor can you share your phone number ID? You've assigned a server URL to your phone number, and VAPI is rejecting requests for the assistant. I need your phone number ID to confirm this.
s
Sullidor
05/10/2025, 1:13 AMI have sent the ID by e-mail to support@vapi.ai.
But if it helps, here again: The Phone Number ID is a800ea57-f671-4dc1-b9c4-17195607cd01
d
daniyar.chambylov
05/10/2025, 3:58 AM@Shubham Bajaj The Phone Number ID: e9cffb27-73b6-452f-9ccd-1010110479d9
@Sullidor already have emailed VAPI support, no response yet.
c
Chiranjeet Mishra
05/11/2025, 1:08 AMHey, can you try again? There is no server URL assigned to your phone number. I guess you have made the update, so it should work by now. For reference, you can check the below screenshot.
https://cdn.discordapp.com/attachments/1370265772823416872/1370930504186204220/image.png?ex=68214a06&is=681ff886&hm=f06a2bfa56a41c04209a76d688d1db22f4e9f7c46c756877cbfc3404deb7bf6b&
d
daniyar.chambylov
05/11/2025, 4:30 AMHI, still getting same error message.
s
Sullidor
05/11/2025, 4:52 AMI am also still getting the same error message. I have compared the number with a working number from a customer account. Via the dashboard and also via the API. Both look identical to me (apart from the different IDs and times). I had already tested the number with another account. I have the same problem there.
Sullidor
05/12/2025, 8:54 AMI have now bought a new number and released the number in question. The new number has worked as it should so far.
d
daniyar.chambylov
05/12/2025, 9:06 AMSame, new number works, but previously owned numbers do not.
@Shubham Bajaj @Kings_big💫
daniyar.chambylov
05/13/2025, 8:19 AM@Shubham Bajaj @Kings_big💫 any updates?
c
Chiranjeet Mishra
05/14/2025, 9:04 PMWe recommend continuing with the new number for now.