Belgium Publishes GKS 2.0 update: Version 2.1 of the Technical Specification for Communication Between POS and FDM

Belgium’s FPS Finance released Version 2.1 of the GKS 2.0 technical specifications, refining how POS systems communicate with fiscal data modules. The update enforces stricter use of date/time fields in RFC3339 format, clarifies functions like costCenterChange and transaction reporting, and introduces new features such as the Robotuser for automated reports.