Hi,
-Im an expert developer on java. Php,c# and oracle for about 15 years
of web, service oriented, and standalone Apps
In particular i have solved (as you can verify in my profile) this requirement in oracle, java and php according to ZATCA and KSA regulation with sucessful read from authorized app from zatca, and i can help you with these,
I'm looking forward to your response, and show you a demo rigth now, if you want