Why can't I print the invoice?

Because ZATCA has not cleared it yet. A tax invoice (to a company with a VAT number) cannot be printed or shared before clearance: this is ZATCA's rule.

Usually it is a temporary outage on ZATCA's side, and the system retries every 5 minutes. Follow the status in Settings → E-invoices sent.

If the status is Rejected by ZATCA, see question 7.