SDI (Sistema di Interscambio) is Italy's mandatory e-invoicing system, operated by the Italian tax authority (Agenzia delle Entrate). Light sends and receives SDI invoices through its integration with...
Last updated Jul 22, 2026 · 1 min read
Good to know: SDI is specific to Italy. For cross-border EU e-invoicing, see the Peppol article.
Registration is fully automatic, with no document verification step. It shows as Processing while the registration completes, then turns Active. If it fails, the onboarding details show the reason. Fix it (for example, an invalid Partita IVA) and start the registration again by clicking Add in the entity's E-invoicing section.
Good to know: SDI does not use an EAS code or e-invoice address, so these fields stay empty on your entity. This is expected.
If you chose Sending and receiving, there is one more step: register the Codice Destinatario below so incoming invoices reach Light.
SDI delivers incoming invoices based on the Codice Destinatario registered with the tax authority. To receive supplier invoices in Light, register Invopop's code JKKZDGR for each Italian entity:
JKKZDGRIncoming invoices now appear in Light automatically. Until you complete this step, supplier invoices won't reach Light.
Important: Registering
JKKZDGRreplaces any previously registered Codice Destinatario. Complete the switch before decommissioning your old invoicing channel.
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