---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/520056#article
headline: "520056: Data mapping already exists"
url: https://www.twilio.com/docs/api/errors/520056
inLanguage: en
dateModified: 2026-07-23T15:11:41.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 520056: Data mapping already exists

Log Type: TWILIO

Log Level: ERROR

## Description

A data mapping with the same display name already exists on the target memory store.

### Possible causes

* Another data mapping on this memory store already uses the requested display name. Display names are unique per store.

### Possible solutions

* Choose a different display name.
* Update the existing data mapping instead of creating a new one.