# 22123: Unable to Initiate Verification Call

Log Level: ERROR

## Description

### Possible causes

* The number you are trying to verify cannot be reached.
* Your account is not allowed to call the number you are trying to verify.
* The number you are attempting to verify has been blocked.
* You are attempting to verify a number that is not a valid phone number.

### Possible solutions

Please reach out to HostedSMS@twilio.com.