# 48026: Outgoing conversation: Invalid proxy address

Log Type: APPLICATION

Log Level: ERROR

## Description

A conversation could not be created because the provided Twilio proxy address for the Frontline user was invalid.

### Possible causes

* The outgoing conversation callback returned an invalid Twilio proxy number or no number at all.

### Possible solutions

* Make sure that the `proxy_address` value returned from the Outgoing Conversation callback is present and properly formatted in [E.164 format](/docs/glossary/what-e164), including any channel prefixes if relevant.
  * Check out the [docs](/docs/frontline/outgoing-conversations) on how to create outgoing conversations.