Fiscal subject related
The current version of this document is 1.7. FPS Finance published version 1.6, followed by version 1.7 immediately. This document explains technical specifications for operating the software and communication between the cash register (POS) system and the FDM component.
Updates concern various topics; among them are clarifications on when and what to show on the POS in certain cases, QR codes in the case of a copy of a VAT, i.e., a fiscal receipt, process flow messages, certain optional messages, etc.
Here is a link to 1.7:
https://www.geregistreerdkassasysteem.be/nl/gks-2-0
Other news from Belgium
FPS Finance in Belgium has published the Fiscal Data Module Certification Guide.

Belgium’s FPS Finance has released the Fiscal Data Module (FDM) Certification Guide, a key component of the GKS 2.0 framework for registered cash registers. The guide outlines legal, technical, and procedural requirements that manufacturers must meet to certify FDMs, including hardware standards, secure communication protocols, and integration with FPS Finance’s cloud services. Read more
New document was uploaded: S4F backoffice patch
S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Read more
New document was uploaded: S4F backoffice patch
S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Read more
TLv6 Implementation Marks Significant Shift in EU’s Trust List Format
A new EU Trust List format, TLv6, will officially replace TLv5 in May 2025 as part of the updated eIDAS Regulation (EU 2024/1183). It introduces key technical changes like a new URI field, updated signature format, and optional phone number support. Organizations must update their systems to avoid signature validation failures and service disruptions, as TLv5 will no longer be valid once TLv6 take... Read more
Peppol Registration of International Partners Qualifies as Implicit Agreement to Receive E-Invoices for Belgian e-Invoicing System

Starting January 1, 2026, Belgium will require structured electronic invoicing for all domestic B2B transactions, using the Peppol network and BIS format, unless both parties agree on another EN16931-compliant format. Read more
Belgian FPS Finance updated technical documentation for GKS 2.0 related to FPS Cloud’s API protocol.

Belgian FPS Finance has updated its technical documentation for GKS 2.0, specifically related to FPS Cloud's API protocol. The latest update, v. 1.06, includes new details in sections 5, 11, and 12.3.3 of the documentation. Read more
Key e-invoicing components to be aware of in Belgium

The Greek Ministry of National Economy and Finance and the Independent Authority for Public Revenue have simplified the process of issuing digital consignment notes. Starting April 1, 2025, businesses with gross revenues exceeding €200,000 or operating in specific sectors, such as energy products, pharmaceuticals, and building materials, must issue and transmit digital consignment notes. Read more