Yes, except for the Legal English course code 50128 for which it is only possible to sit for the internal exam, you can register a language certificate only if it is one of those recognized by the University as an alternative to the internal exam and if it is submitted to Language Center for recording within 3 years after sitting the international certification exam (2 years for TOEFL and IELTS as well, according to the provisions of the certifying agency).
For more information: www.unibocconi.eu/languagecenter, “Language certification recognition” section.