---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/520043#article
headline: "520043: Resource version conflict"
url: https://www.twilio.com/docs/api/errors/520043
inLanguage: en
dateModified: 2026-07-23T15:11:41.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 520043: Resource version conflict

Log Type: TWILIO

Log Level: ERROR

## Description

The supplied `If-Match` ETag does not match the current resource version.

### Possible causes

* The targeted store, identity-resolution settings, trait group, or data mapping was updated by another caller between fetch and update.

### Possible solutions

* Re-fetch the resource to obtain the latest ETag, and then retry the request.