---
page_type: error
code: 50412
message: "50412: Participant proxy address is empty"
level: ERROR
product: Programmable Chat
---

## Error - 50412

### Conversations: Participant proxy address is empty

The provided participant proxy address parameter must not be empty.

#### Possible Causes

- MessagingBinding.ProxyAddress parameter provided with the request contains an empty string.

#### Possible Solutions

- Add a non-empty MessagingBinding.ProxyAddress parameter to the API request and supply a valid participant proxy address matching your desired channel, e.g. SMS, MMS or WhatsApp.