---
page_type: error
code: 50430
message: "50430: Participant is not a member of conversation"
level: ERROR
product: Programmable Chat
---

## Error - 50430

### Conversations: Participant is not a member of conversation

The requested participant is not a member of this conversation.

#### Possible Causes

- The requested participant was removed from this conversation, or was never added to it.
- The requested participant SID is misspelled.
- The requested participant is a member of a different conversation.

#### Possible Solutions

- Ensure that the participant is added to the conversation. Use API to [create a new participant](/docs/conversations/api/conversation-participant-resource#add-a-conversation-participant-sms).