Invoice system
Budget: $10 – $30 USD
Require invoice system which is compatible with saudi zatca requirement of QR code. This link have the SDK
https://zatca.gov.sa/en/E-Invoicing/SystemsDevelopers/ComplianceEnablementToolbox/Pages/DownloadSDK.aspx
https://zatca.gov.sa/en/E-Invoicing/SystemsDevelopers/ComplianceEnablementToolbox/Pages/DownloadSDK.aspx