---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/520051#article
headline: "520051: Invalid operation identifier"
url: https://www.twilio.com/docs/api/errors/520051
inLanguage: en
dateModified: 2026-07-29T19:04:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 520051: Invalid operation identifier

Log Type: TWILIO

Log Level: ERROR

## Description

The supplied operation ID is not a valid operation identifier.

### Possible causes

* The operation ID is not a well-formed TTID.
* The TTID belongs to a different product domain or resource type.

### Possible solutions

* Use the operation ID that the originating asynchronous write request returned.