Any 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 on the date of the delivery of the written application or, in the case of an oral announcement, on the date of the latter.
The appeal must also indicate the decision against which it is directed and the relevant authority, the reasons on which the assertion of unlawfulness is based, the form of order sought, and the information required in order to assess whether the appeal has been filed within the specified deadline. 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.