---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/50109#article
headline: "50109: Conversation role not found"
url: https://www.twilio.com/docs/api/errors/50109
inLanguage: en
dateModified: 2026-06-08T11:29:20.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 50109: Conversation role not found

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when the `roleSid` in your request does not match a Role resource in the target Conversation Service. Roles are scoped to a Conversation Service, and Twilio uses service-level roles for Users and conversation-level roles for Participants.

### Possible causes

* The `roleSid` value does not reference an existing `RL...` Role SID. Twilio expects a valid Role resource when you assign a role to a User or Participant.
* The role exists in a different Conversation Service. If your application uses more than one service, you must specify the correct `IS...` Service SID instead of relying on the default shortened endpoint.
* The request uses the wrong role scope. Users require a service-level role, while Participants require a conversation-level role.

### Possible solutions

* Fetch the role or list roles for the target Conversation Service and confirm that the `roleSid` you send is present before you retry the request.
* If you work with multiple Conversation Services, send the request against the correct service-scoped endpoint and use the matching `IS...` Service SID for the role, user, or participant you are updating.
* Assign the correct role type for the resource you are updating. Use a `service` role for a User and a `conversation` role for a Participant.
* If the role does not exist yet, create it first with the correct `type` and permissions, then retry the request with the new `RL...` SID.

#### Additional resources

* [Role Resource](/docs/conversations-classic/api/role-resource)
* [Conversations (classic) User Resource](/docs/conversations-classic/api/user-resource)
* [Service-Scoped Conversation Participant Resource](/docs/conversations-classic/api/service-participant-resource)