---
page_type: error
code: 60511
message: "60511: SNA Downstream Error"
level: ERROR
product: Verify
---

## Description

SNA Downstream Error

### Possible Causes

The Verification request was received but failed during processing due to a downstream error during the Silent Network Auth process. This can happen when the carrier was expecting a missing header, the phone number was invalid, the SNA URL was invoked on a carrier that does not support HTTPS, or there is an invalid redirect.

### Possible Solutions

Retry Verification using a channel other than Silent Network Auth for this end user.