---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/95403#article
headline: "95403: Operator output schema validation failed"
url: https://www.twilio.com/docs/api/errors/95403
inLanguage: en
dateModified: 2026-04-14T19:05:23.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 95403: Operator output schema validation failed

Log Type: APPLICATION

Log Level: ERROR

## Description

The operator execution completed but the output did not conform to the expected schema.

### Possible causes

* Operator returned data in an unexpected format.
* Output schema mismatch between operator version and configuration.

### Possible solutions

* Verify the operator configuration matches the expected output schema.
* Update custom operator implementations to return valid output format.
* Check for operator version compatibility with your configuration.