This course is specifically designed for companies having implemented HO2C but that are not yet ready to support Peppol BIS v3 for cross-sector data exchange towards public entities. By using a bridge from HO2C v3 to Peppol BIS v3, these enterprises will have the possibility to send this format to Belgian governments (and even B2B). This presentation explains how to start this journey, what are the pitfalls and how to set up test- and production environments. Notice that also the feedback mechanism will be explained when sending e.g. invoices.