---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/50351#article
headline: "50351: Conversation SID not provided"
url: https://www.twilio.com/docs/api/errors/50351
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 50351: Conversation SID not provided

Log Level: ERROR

## Description

Conversation SID parameter is required but was not provided.

### Possible causes

Your API request did not include a ConversationSid form parameter.

### Possible solutions

Add a valid ConversationSid parameter to the API request, making sure you haven't spelled the parameter name wrong.