---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/45304#article
headline: "45304: Internal timeout error"
url: https://www.twilio.com/docs/api/errors/45304
inLanguage: en
dateModified: 2026-06-09T11:00:42.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 45304: Internal timeout error

Log Type: TWILIO

Log Level: ERROR

## Description

This error means Flex did not complete an internal operation before the timeout limit was reached. It typically indicates a temporary service-side delay while Flex is processing a live interaction or another time-sensitive operation.

### Possible causes

* A Twilio service that Flex depends on did not respond before the operation timed out.
* Network connectivity issues between the agent desktop and Twilio delayed or interrupted the request.
* The action was attempted during a live voice workflow and the interaction state changed before Flex could finish processing it.

### Possible solutions

* Retry the operation.
* Before retrying, confirm that the interaction is still active. If you are performing a warm transfer, make sure the call is live, conference-based, not on hold, and not already in another transfer.
* Verify the agent's network connection and confirm that your browser, proxy, or VPN allows access to required Flex domains such as `*.twilio.com`.
* Open the Flex Status Report or download an error report to capture logs and service status details for the failed session.
* If multiple users see the same timeout, check the Twilio Status page and review the related events in Debugger.

#### Additional resources

* [User Guide to Troubleshooting the Flex UI](/docs/flex/end-user-guide/troubleshooting)
* [Error Handling and Debugging](/docs/flex/developer/ui/errors-and-debugging)
* [Warm transfer](/docs/flex/end-user-guide/warm-transfer)