It is best if you find out directly from the university of applied sciences of your choice concerning the exact entrance requirements and the application and entrance procedure. Usually, foreign applicants have to submit a school-leaving certification which is equivalent to an Austrian school-leaving certificate. Certificates issued abroad must be accompanied by notarised translations.
For a Master’s study programme at a university of applied sciences, foreign applicants must have successfully completed a Bachelor’s study programme of at least six semesters in length (min. 180 ECTS points) which is suitable for studies in that field.