The SID of the [Account](https://www.twilio.com/docs/iam/api/account) that created the Application resources to update.

The Twilio-provided string that uniquely identifies the Application resource to update.

A descriptive string that you create to describe the resource. It can be up to 64 characters long.

The API version to use to start a new TwiML session. Can be: `2010-04-01` or `2008-08-01`. The default value is your account's default API version.

The URL we should call when the phone number assigned to this application receives a call.

The HTTP method we should use to call `voice_url`. Can be: `GET` or `POST`.

The URL that we should call when an error occurs retrieving or executing the TwiML requested by `url`.

The HTTP method we should use to call `voice_fallback_url`. Can be: `GET` or `POST`.

The URL we should call using the `status_callback_method` to send status information to your application.

The HTTP method we should use to call `status_callback`. Can be: `GET` or `POST`.

Whether we should look up the caller's caller-ID name from the CNAM database (additional charges apply). Can be: `true` or `false`.

The URL we should call when the phone number receives an incoming SMS message.

The HTTP method we should use to call `sms_url`. Can be: `GET` or `POST`.

The URL that we should call when an error occurs while retrieving or executing the TwiML from `sms_url`.

The HTTP method we should use to call `sms_fallback_url`. Can be: `GET` or `POST`.

Same as message_status_callback: The URL we should call using a POST method to send status information about SMS messages sent by the application. Deprecated, included for backwards compatibility.

The URL we should call using a POST method to send message status information to your application.

Whether to allow other Twilio accounts to dial this applicaton using Dial verb. Can be: `true` or `false`.