It strongly recommended to pay the social contribution in order to re-register for the next semester. If you fail to do so, you will be automatically exmatriculated.
Active and formal exmatriculation is advisable, because you will receive an exmatriculation certificate from us.
You will need it, for example, if you want to enroll at another German university at a later date, but you may also need it to present to authorities such as the family insurance fund, the employment office and the health insurance fund. In addition, the exmatriculation certificate will later serve as proof of the duration of your studies for the pension insurance institution.