---
page_type: error
code: 20410
message: "20410: Gone"
level: ERROR
product: Programmable Messaging
---

## Description

The API is no longer available

### Possible Causes

- You are attempting to send messages via a discontinued API
- You are sending messages via the deprecated "SMS/Messages" endpoint

### Possible Solutions

- Ensure you are using the most up to date Messaging Resources. See the [Programmable Messaging API docs](/docs/messaging/api) for up to date endpoints.
- Migrate from the "SMS/Messages" endpoint to "Messages" endpoint. See [here](https://support.twilio.com/hc/en-us/articles/223181028-Switching-from-SMS-Messages-resource-URI-to-Messages-resource-URI) for more information.