The Pan-European Public Procurement Online (PEPPOL) project by SAP Dec 7, 2017 Webinar Governments in the Netherlands and in Belgium already mandate electronic invoices with public customers. Further EU countries will follow by April 18, 2019. Under Directive 2014/55/EU, central public authorities of EU countries have to support electronic invoices latest by April 18, 2019. Corresponding measures have been taken in the Netherlands … This content is only for paying members. Are you a member yet?. Click here to login. Do you want to become a member?. Click here to register.