A decision may be appealed against. An appeal must be submitted in writing, within 4 weeks, to the authority that issued the decision. The time limit begins with the delivery of the written application or, in the case of an oral notification, on the date of the latter.
The appeal must also indicate the decision against which it is directed and include the relevant authority, the basis for asserting unlawfulness, the form of order sought, and the information required in order to assess whether the appeal has been filed in time. An appeal is no longer admissible if, after the issuance or announcement of the decision, the party expressly waives the appeal.
Moreover, all decisions must contain instructions on the right of appeal, including information on the authority with which the appeal must be filed and the corresponding deadline.