---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/50440#article
headline: "50440: Failed to remove the proxy address of a participant."
url: https://www.twilio.com/docs/api/errors/50440
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 50440: Failed to remove the proxy address of a participant.

Log Type: APPLICATION

Log Level: ERROR

## Description

The conversation participant being updated does not have a proxy address.

### Possible causes

* The participant does not have a proxy address you are trying to remove.
* The participant you are updating is not an SMS participant.

### Possible solutions

* Check that the request does not update proxy address of this particular participant.