---
page_type: error
code: 48025
message: "48025: Outgoing conversation: Invalid contact address"
level: ERROR
product: Frontline
---

## Description

A conversation could not be created because the provided contact address was invalid.

### Possible Causes

- The contact phone number used to initiate a new conversation was invalid.

### Possible Solutions

- Make sure that the contact address returned from the CRM callback is correct and properly formatted in [E.164 format](/docs/glossary/what-e164), including any channel prefixes if relevant.
  - Check out the [docs](/docs/frontline/my-customers) on CRM callbacks for additional information.