---
page_type: error
code: 48011
message: "48011: Custom Routing Callback failed due to an internal error"
level: ERROR
product: Frontline
---

## Description

An internal error has occurred that prevented Twilio from processing your callback.

### Possible Causes

- We failed to execute callback request.

### Possible Solutions

- If the error persists, please [contact us](/help/contact) to figure out what has happened and how to fix it!