In order to complete your studies (this goes only for BA!), you need to complete 45 ECTS from any different field of studies offered by the University of Vienna. The link to the curriculums you find here: http://studentpoint.univie.ac.at/durchs-studium/erweiterungscurricula/
Erweiterungscurriculum (EC) stands for a ‘mini extension’ of an existing study and need to be absolved as the whole module (fixed content) in order for the ECTS points to count.
Alternative Erweiterungen (AE) can be chosen freely – there is no fixed content, which means that you do not need to absolve the whole module – any ECTS from any module will count.
The following four patterns for tackling the curriculum are possible: