# 50409: Participant address equals proxy address

Log Level: ERROR

## Description

The supplied participant address must not equal its proxy address.

### Possible causes

* When requesting a participant to be added to a conversation, you specified the identical participant address and its proxy address parameters.

### Possible solutions

* Provide a participant's public address (e.g. user's SMS/MMS number) different from a conversation proxy number (e.g. Twilio SMS/MMS number) when adding a participant to the conference.