Siav serves as an intermediary with SDI
The PA invoices sending needs to go through the Interchange System (SDI), a national portal suppliers must deliver invoices to, using a specific XML format. Siav tracks with the certified email all communication with the SDI interchange system.
Even the B2B invoicing includes the SDI as an intermediary. The electronic invoice data sent and received through the interchange system, already provided for the PA invoices, will in fact be collected directly by the Revenue Agency, where the party has exercised the electronic submission option.