---
page_type: error
code: 50433
message: "50433: Participant already exists"
level: ERROR
product: Programmable Chat
---

## Error - 50433

### Conversations: Participant already exists

The requested Chat participant is already mapped to a conversation.

#### Possible Causes

- You are attempting to add a Programmable Chat participant to a conversation that already has another participant with the same identity.

#### Possible Solutions

- [Retrieve a list](/docs/conversations/api/conversation-participant-resource#read-multiple-conversationparticipant-resources) of existing participants in this conversation and remove the one with the same identity using [REST API](/docs/conversations/api/conversation-participant-resource#delete-a-conversationparticipant-resource).
- Perhaps it's not an issue, and we can continue as-is. Instead of adding a new participant, reuse the existing one, potentially [update its attributes](/docs/conversations/api/conversation-participant-resource#update-a-conversationparticipant-resource) if necessary.