My medical certificate was not accepted or classified as insufficient - what is the reason?

The submitted certificate must always precisely define the period of absence. If your certificate contains the wording "until further notice", for example, we are unfortunately unable to include a rest period. In the event of absence due to illness, a certificate of incapacity for work is insufficient and cannot be accepted as proof, as a specialist medical certificate of temporary incapacity for sport with a predicted duration of absence is required.