The guide gives a technical explanation how to develop a Fatoora compliant QR and can be downloaded from here:
Simplified E-Invoice Sample
General information about e-invoicing in KSA:
E-invoicing in the Kingdom of Saudi Arabia (linking E-invoicing Regulation with the VAT Legislations)
Electronic Invoicing is a procedure that aims to convert the issuing of paper invoices as well as credit and debit notes into an electronic process that allows the exchange and processing of invoices, credit and debit notes in a structured electronic format between the buyer and seller.
The E-Invoicing Regulation, shall be read together with the Unified VAT Agreement (the Agreement), the VAT Law published on 4//11//1438 H and its amendments (the VAT Law), the VAT Implementing Regulation (VAT Implementing Regulation) and the resolutions issued pursuant to the Electronic Invoicing Regulation, including the resolution on the Controls, Requirements, Technical Specifications and Procedural Rules required for implementing Electronic Invoicing in Kingdom of Saudi Arabia.
Read more about E-invoicing in KSA in the below guide from ZATCA: