# 37001: WhatsApp Voice: Outbound calls are not supported in this region

Log Type: APPLICATION

Log Level: ERROR

## Description

The business-initiated WhatsApp call failed because it is not supported in the Twilio region.

### Possible causes

Business-initiated WhatsApp calls are not supported in all Twilio regions.

### Possible solutions

Ensure that a business-initiated WhatsApp call is placed in the supported Twilio Region.