---
page_type: error
code: 50418
message: "50418: Non-Chat participants limit exceeded"
level: ERROR
product: Programmable Chat
---

## Error - 50418

### Conversations: Non-Chat participants limit exceeded

The total number of SMS, WhatsApp, or other non-Chat participants in this conversation exceeds the allowed limit.

#### Possible Causes

- You are trying to add more non-Chat participants than allowed in this conversation. [Maximum number](/docs/conversations/conversations-limits) of conversation participants is 50.

#### Possible Solutions

- Retrieve a [list of current participants](/docs/conversations/api/conversation-participant-resource#read-multiple-conversationparticipant-resources) in this conversation and [remove](/docs/conversations/api/conversation-participant-resource#delete-a-conversationparticipant-resource) the ones that are no longer required.