How to issue a simplified tax invoice in Saudi Arabia: the steps, the fields and the 24-hour report
A simplified tax invoice is the one you give a consumer: generated by a compliant solution at the moment of sale, handed over at once with its QR code, and reported to the Authority within 24 hours. The steps in order, the fields it must carry with the rule that checks each, and a worked example at 15% VAT from a VAT-inclusive price.
Onboarding to Fatoora: the OTP, the CSR and the two certificates, explained
The handshake every ZATCA Phase 2 integration has to complete before it may send a single invoice: what the one-time password actually delegates, what the compliance certificate proves that the production certificate does not, how many compliance documents you will really be asked for, and the honest cause behind each way it fails.
Your invoice was rejected by ZATCA: how to read the error code
Where the code sits in the Authority response, why "accepted with warnings" is accepted, why a rejection is fixed by resending the same invoice rather than issuing a credit note, and the handful of codes behind most rejections and most warnings.