Tc Panel Sorgu Fixed < FHD >

| Error Message | Root Cause | Quick Fix | |---------------|-------------|-------------| | "Servis kullanılamıyor" | NVI service down or IP blocked | Check https://status.turkiye.gov.tr . Wait 15 min. | | "Güvenlik duvarı engeli" | Firewall blocking port 443 | Allow outbound HTTPS to *.nvi.gov.tr | | "Kimlik numarası geçersiz" | Wrong TC format (must be 11 digits) | Trim spaces and validate with mod10 algorithm. | | "SOAP cekirdegi hatasi" | WSDL mismatch | Regenerate proxy class using wsdl.exe tool. | | "Yetkisiz erişim" | Missing client certificate | Reinstall .pfx with private key export. |