How to test my invoice through sandbox or any other platform

We have an accounting system as per Zatca regulations. We have to test our invoice through Sandbox or any other platform. I don’t know how to test my invoice through Sandbox.

Please let me know how to test my invoice, any link is available to test my invoice, credit notes, debit notes? I don’t have an account in ZATCA..

Please any one know the test process send thr replied here or text me through whatsapp 00967782291568

yunis2021@gmail.com