30043: International SMS via Domestic Gateway

This error means the destination mobile operator flagged the SMS as international traffic that was sent through a domestic gateway. The message was misrouted as domestic.

• The destination mobile operator identified the message as international SMS traffic sent through a domestic gateway.
• The message was routed over a domestic route when the destination required an international route.

• Review the SMS Guidelines for the destination country and check for restrictions on domestic or international traffic.
• If the message is genuinely domestic, open a support request and provide evidence to clarify the routing.
• If the message is international, open a support ticket and request that the messages be moved to the appropriate international gateways.
• Make sure your sender has global SMS capability and that international messaging is enabled for the countries you want to reach. (help.twilio.com)

• What to know before sending international SMS messages
• What is Global SMS and how does it work?
• Debugging Common Issues with SMS