The course syllabus should specify whether supplementation of an examined student performance is permitted. A supplementation should be based on the same information as the original examination. If you don't submit the supplementation within the specified time, you will fail the examination task.
Resit and further examination sessions
In addition to the ordinary examination session, further sessions are to be provided, at the earliest 10 working days after the result of the ordinary examination has been notified and no later than two months after the ordinary examination. For examinations in May and June, the first retake may be offered within three months.
You have the right to retake an examination on a course if you do not get a passing grade. If there is a limit on the number of examination sessions for your particular course, it will be stated in the course syllabus. If you were unable to attend a compulsory element, you should be given the opportunity to participate in a future scheduled element or an alternative assignment.