# 50433: Participant already exists

Log Level: ERROR

## Description

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.