You are viewing documentation for API version 2024-10-31. The latest version is 2026-06-01. Key changes include updated terminology (Asset → Organization, Entity → Taxpayer/Location).
If a connection issue on your side prevents access to our API, or if the AdE’s ‘Fatture e Corrispettivi’ (Invoices and Receipts) portal is temporarily unavailable, transactions cannot be transmitted to the Italian Revenue Agency. If the retry fails, compliance can easily be ensured by following these steps:
- Provide the customer with a simple paper document as recommended by the Italian tax authority. This document should serve as a temporary receipt for the transaction.
- Ensure compliance by issuing an electronic invoice through the AdE’s SdI (‘Sistema di Interscambio’) within 12 days of the transaction.
To issue the electronic invoice, follow this process:
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Issue a receipt with a note indicating that the portal was unavailable at the time of the transaction, e.g. “Portal unavailable.”
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Record the following details:
- Date and time of issue
- Consecutive invoice number
- Consumer’s name, surname, and fiscal code (a widely known personal ID number in Italy)
- VAT number and merchant’s legal name
- Total transaction amount (before and after VAT)
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Transmit the recorded data using an e-invoice system within the specified 12-day period.
By following this procedure, compliance with Italian regulations will be ensured, even if connectivity issues occur.
From API version 2026-06-01, fiskaly can issue this e-invoice for you — see E-INVOICE IT to cover offline transactions without a separate invoicing system.