Limited enrollment
If certain requirements are not met (e.g. admission to a Master´s degree program without already having a Bachelor's certificate, language pre-study language courses, Studienkolleg, mandatory German language courses), enrollment is limited. When re-registering for the semester after the time limit has expired, the required proof of qualification must be provided, otherwise you will not be able to continue your studies.
If, for example, the relevant Bachelor's certificate is not yet available for enrollment in a Master's degree, enrollment is limited to one semester. Proof of the Bachelor's degree must be provided for re-registration in the second semester.
Also in an exchange program students are enrolled for a limited period of time. It is not possible to re-register for the same exchange program after this time.