----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Import Twilio Number]() * [Create Assistant]() * [Create Phone Call]() * [Update Assistant]() -----------------------------

### Answer It looks like you are encountering an issue where the webhook does not seem to trigger correctly, and you are receiving error messages indicating that the "assistant" property should not exist. Here are some steps and checks you can perform: 1. **Check Server URL Configuration**: Ensure that your Server URL is correctly configured to handle the

assistant-request

message type. The expected JSON object should contain the assistant details, but it should not be wrapped inside another "assistant" field. Verify the structure of your JSON response. 2. **Webhook Response**: Ensure that the response from your Server URL adheres to the expected format. For example, when Vapi sends an

assistant-request

to your server, the response should look something like this:

json
    {
      "assistant": {
        "firstMessage": "Hey Ryan, how are you?",
        "model": {
          "provider": "openai",
          "model": "gpt-3.5-turbo",
          "messages": [
            {
              "role": "system",
              "content": "You're Ryan's assistant..."
            }
          ]
        }
      }
    }

Ensure there are no additional nesting or incorrect properties [(1)]() . 3. **Ensure Server URL is Correctly Set**: Double-check that the Server URL () is correctly set in your Vapi configuration, and it is correctly receiving the requests. 4. **Error Handling**: The error you're seeing,

property assistant should not exist

, suggests that the structure of the JSON does not meet the expected format. Ensure the JSON response from your server matches the schema Vapi expects. If the JSON response from your Server URL is as follows:

json
{
  "assistant": {
    ...
  }
}

It should not be nested under another assistant field. If you have configured everything correctly and the issue persists, it could be worth reviewing the webhook setup and validating the response structure using a tool like Postman to ensure it matches the expected format.

Got it. Tagging @User for additional help.

also send me the payload.