1) within the period of seven days provide the answer referred to in Section 11.2, Paragraph four and Section 12, Paragraph two, three or four of this Law; 2) within a period of 15 days answer the applicant if the information requires no additional processing; or 3) within a period of 30 days answer the applicant if information requires additional processing, and not later than within a period of 15 days notify the applicant of this. (2) An answer to a collective information request shall be sent to the person who has first signed the relevant request for information, or to the person who is indicated by the collective applicants for information. [22 December 2005; 5 October 2006] Section 15. Decision of an Institution and Control of Actions An administrative act issued by an institution or the actual actions performed may be disputed or appealed according to the procedures specified in the Administrative Procedure Law. [19 February 2004; 22 December 2005] Section 16. Protection of Restricted Access information (1) An institution shall ensure that the duty to protect restricted access information is known by all persons to whom this duty applies, if it is not otherwise specified by law. A written confirmation shall be required from persons who process restricted access information that they know the regulations and undertake to observe them. (2) If, due to illegal disclosure of restricted access information, harm has been caused to its owner or another person, or his or her legal interests have been materially infringed, these persons have the right to bring an action for damages for the harm done, or for restoration of the rights infringed. (3) If a person has unlawfully disclosed information, which has been recognised as restricted access information, he or she shall be disciplinarily or criminally liable. [26 November 2003; 19 February 2004; 22 December 2005; 5 October 2006] Section 17. Information Re-use Provisions For information re-use conditions shall not be imposed. In exceptional cases, in order to ensure qualitative and efficient re-use of information, an institution without restricting competition, may provide for re-use conditions.