Oyster eInvoicing

Compliant eInvoicing for the EU and beyond

Oyster empowers its licensees to be fully compliant without adding work to the process. This permits companies to be fully aligned with SDI, ATCUD, Peppol BIS 3.0 and upcoming EU ViDA requirements without having to change their way of working - working with mandates that are permanently updated to meet the required standards.

Book a Demo

Why eInvoicing Matters

Paper invoices are disappearing — fast. Since the first EDI links in the 1960s, businesses have been replacing paper with digital data exchange. What began as simple document transfer has evolved into mandatory, government‑controlled eInvoicing across Europe.

The EU’s Directive 2014/55/EU introduced the EN 16931 standard — a common semantic model that ensures every invoice speaks the same language. Public bodies adopted it in 2019–2020, and now national systems like SDI (Italy), ATCUD/SAF‑T (Portugal), and Peppol and soon mandatory B2B eInvoicing in Germany are accelerating full digital compliance. This though is only the start of what is spreading wordwide. Read below for more.

Governments want accuracy, transparency, and real‑time centralised tax and VAT controls. Businesses need automation, reliability, and zero‑error compliance.

Oyster delivers both.

2019 - Italy

MSDI B2B Mandatory

FatturaPA XML, SDI transmission, continuous schema updates

2019-2020 - EU

Mandate 2014/55/EU

Directive requires all public bodies to receive EN 16931 eInvoices.

2020 - Portugal

ATCUD + QR + SAF‑T

Mandatory certified invoicing, QR codes, SAF‑T PT

2025-2028 - Germany

Mandatory B2B eInvoicing

Phased rollout leading to full EN 16931‑based eInvoicing

EU ViDA Framework (2024 – 2028)

Pan‑European harmonisation of structured e‑invoicing and digital VAT reporting. Built on the EN 16931 semantic model for compliant invoice exchange. Phased rollout across member states from 2024 to 2028.

The EU’s ViDA framework is part of a much larger global shift toward state‑validated digital invoicing — a trend explored in our latest industry feature. As the article notes, “governments are moving decisively toward state‑controlled digital invoicing, replacing traditional PDF workflows with structured XML formats, real‑time clearance systems, and mandatory reporting platforms.” This worldwide transition is reshaping how maritime operators issue, transmit, and archive invoices across borders. ViDA represents Europe’s answer to this transformation: a unified, EN 16931‑based standard designed to harmonise fragmented national systems and prepare businesses for a future where compliance is operational, not administrative.

👉 Read the full article: Go with the eFlow — The Global Shift Toward Mandatory Digital Invoicing

This EU‑level shift mirrors the global trend described in our latest industry article, where state‑validated invoicing is becoming the worldwide norm for maritime operators. The article highlights how countries like Italy (SDI), Germany (XRechnung/ZUGFeRD), Poland (KSeF), France (e‑Facture), India (IRP) and Saudi Arabia (ZATCA) are converging toward mandatory structured formats and clearance systems — exactly the pressures ViDA aims to unify across Europe.