This will not work with Arduino IDE 1.6.5 (or below) or with non ESP32-S2/S3 devices (e.g. Arduino UNO, Arduino MEGA, etc.). To use this library you need to have Arduino core for the ESP32 installed.

PEPPOL (Pan-European Public Procurement On-Line) is a set of specifications that enables cross-border e-procurement in Europe and beyond. This toolkit simplifies the process of creating compliant ...