⚠️ Important: KSeF will become mandatory for large taxpayers on 1 February 2026, and for everyone else on 1 April 2026. Start your integration now! The main client class for interacting with KSeF API.
Java 17 or higher Maven 3.6 or higher PostgreSQL 12 or higher Redis 6 or higher IDE (IntelliJ IDEA, Eclipse, or VS Code) src/main/java/com/rskworld ...
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