If you have registered for an exam and if you have already paid for the exam, but cannot attend it (for example, due to illness), you can deregister from the exam. You can do this in person, by phone, or by e-mail up to two days before the exam date. In this case you will either be scheduled to take the exam during the next exam period (at the same institution), or you will receive 85% of the exam costs back. If you have deregistered from an exam, you may not register anew for an exam during the same exam period.
If you withdraw from the exam without deregistering, you must register again to take an exam; payment in full is required. We therefore recommend that you deregister in time if you do not plan to take the exam.