60534: SNA Downstream Carrier Error

This error occurs when Verify receives a Silent Network Auth verification request, but the request fails during processing because of a downstream carrier error. Silent Network Auth requires the client to invoke sna.url from the end user's device over the mobile network so Verify can complete the carrier-side phone number check.

• The downstream carrier returned an error while Verify was processing the Silent Network Auth request.
• The Silent Network Auth flow could not be completed with the carrier.
• The client did not complete the required sna.url request from a device connected to the mobile network, which can prevent the carrier verification step from completing.

• Retry the verification using a channel other than Silent Network Auth for this end user, such as SMS.
• Use channel=auto if you want Verify to attempt Silent Network Auth first and fall back to SMS when SNA cannot be completed.
• Make a Verification Check request and inspect sna_attempts_error_codes to get more detail about the failed SNA attempt.
• Confirm that the client sends the sna.url request from the end user's device over an active mobile data connection, then retry the verification.

• Verify Silent Network Auth Overview
• Best Practices for Verify SNA Error Handling
• Verifications API Reference