“Guarantees of Origin are required under the EU “RES Directive” (2009/28/EC), which are obligatory on all Member States of the European Union.
Although it is possible for Guarantees of Origin to be printed, the EECS standard does not support this: all EECS Guarantees of Origin are electronic. The reasons for this are given elsewhere in these FAQ “Why should certificates be electronic?” and “Can you print EECS certificates?”. Source: https://www.aib-net.org/faq/types-certificate