Depending on the day, 15-20% of our inbound calls are receiving error messages. We have an assistant-request hit our server, which responds with a custom assistant for each call. An example twilio call SID is

CAe188de692d456114f563a4a17cb07683

, and VAPI call ID

d414bd19-6c85-40bf-b984-ce52c68d18a0

. When visiting https://dashboard.vapi.ai/calls/d414bd19-6c85-40bf-b984-ce52c68d18a0 (which is not found in the call log), the page has an error:

r is undefined

. A screenshot is included. This call is not visible within the VAPI dashboard. The only information I have on this call existing is my server's log and the Twilio call log (Monitor => Logs => Calls). A screenshot is included of the Twilio webhook history The error said to the user is

xml
<Response>
    <Say>Your server rejected `assistant-request` webhook. Error: timeout of 7500ms exceeded</Say>
</Response>

My server received the request for the assistant at 2025-04-09 00:31:56.021451+00, and the call ended at 2025-04-09 00:32:03.48915+00. https://cdn.discordapp.com/attachments/1359330912621563985/1359330913292517538/image.png?ex=67f71710&is=67f5c590&hm=e9632d80f244692a19a673977031ab32673f4b6d4bb66b8b36fa61e1271f1100& https://cdn.discordapp.com/attachments/1359330912621563985/1359330913665941674/image.png?ex=67f71710&is=67f5c590&hm=9b0cb5edd19787dabddb355bc9328e4f237d325cb030695ef58c42498b091044&

Hi there! 👋 I see you're experiencing issues with some of your inbound calls not being logged in VAPI. I'm unable to determine the exact cause of your specific issue without more detailed diagnostics. However, I can help you understand what might be happening and provide some troubleshooting steps. Based on the information you've provided, I can see several potential issues: ## The Timeout Issue The error message indicates that your server took too long to respond to the

assistant-request

webhook:

Your server rejected `assistant-request` webhook. Error: timeout of 7500ms exceeded

According to the timestamps you provided, your server received the request at 00:31:56 and the call ended at 00:32:03, which is about 7 seconds later. This aligns with the 7500ms (7.5 seconds) timeout mentioned in the error message. According to [troubleshooting information](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336345690393149452), this could be caused by: 1. **Server response time**: Your server might be taking too long to process the request and respond 2. **Network delays**: There might be network issues between VAPI and your server 3. **Server load**: Your server might be under heavy load, causing it to miss incoming webhook calls ## The "r is undefined" Error The "r is undefined" error you're seeing in the dashboard is likely related to the missing call logs. According to [error information](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1344328162024362095), this could be caused by: 1. **Outdated daily-js version**: The error might be related to using an outdated version of the daily-js library 2. **VAPI UI bugs**: The VAPI UI has known bugs that could be causing this error ## Troubleshooting Steps Here are some steps you can take to debug this issue: 1. **Check your server logs**: Look for any errors or slow response times in your server logs during the time of these failed calls

There was a process that started at 2025-04-09 00:31:56.034+00 and ended at 2025-04-09 00:32:04.95744+00. How can I change the request timeout?

Message marked as helpful by @taco! 🎉

Hi there! 👋 I see you're asking about changing the request timeout for the assistant-request webhook in VAPI. I can definitely help with that! Based on the information I found, there are several ways to increase the timeout setting: ## Option 1: Update the

timeoutSeconds

parameter You can use a PATCH request to update the

timeoutSeconds

parameter in your assistant configuration:

bash
curl -X PATCH 'https://api.vapi.ai/assistant/{assistant_id}' \
-H 'Authorization: Bearer YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{
  "server": {
    "url": "https://your-server-url.com",
    "secret": "your-secret-key",
    "timeoutSeconds": 20,
    "headers": {
      "custom-header": "header-value"
    }
  }
}'

This would increase your timeout from the default 7.5 seconds to 20 seconds, which should accommodate your process that's taking around 8-9 seconds to complete. ## Option 2: Update via

analysisPlan.structuredDataRequestTimeoutSeconds

Alternatively, you can update the

analysisPlan.structuredDataRequestTimeoutSeconds

setting: 1. Go to the API documentation:

https://docs.vapi.ai/api-reference/assistants/update-assistant

2. Copy your private key from the dashboard:

profile > api keys > private api key

3. Make changes to the

analysisPlan

object, setting

structuredDataRequestTimeoutSeconds

to

20s

4. Make sure to include all previous values along with this new timeout value ## Option 3: Contact Vapi Support If you need specific adjustments or are having trouble with the API methods, you can contact Vapi support directly to discuss customization options for your specific use case. Would you like me to provide more details on any of these methods? Sources: - [How to change the request timeout for the assistant-request webhook in VAPI](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341692740454584331)

I need support then to change this. I don't use assistants My org ID is 06bcae9b-0274-4346-ae14-af1ab8fc1ed5

Marking this ticket as Solved ✅