Withdrawing from a previous university when enrolling at Universität Hamburg
As a rule, students enroll for only one degree program at a German public or publicly recognized university. Enrolling for 2 degree programs at a time is possible only if you apply for a double degree and your application is granted.
Thus, when you enroll at Universität Hamburg, you are required to promise that you will withdraw from other German public or publicly recognized universities no later than the end of your first semester following enrollment at Universität Hamburg. Submit the declaration as part of the online enrollment application. You do not need formal proof (e.g., a withdrawal certificate) from your former university.