11.4. Licensee is entitled to audit, via a trusted third party, bound to non-disclosure, to what extent Avisi is meeting the obligations under this Data Processing Addendum. Avisi shall lend its cooperation to such an audit. Such an audit will only be conducted after Licensee has requested the available similar audit reports from Avisi, has judged the reports and provides sound argumentation why an audit, initiated by Licensee, is still justifiable. Such an audit will only be justifiable when the similar audit reports that are available from Avisi provide no or insufficient proof about the compliance of this Data Processing Addendum by Avisi. If an audit, initiated by Licensee, is justified, it will only be conducted at least thirty (30) days after prior announcement by Licensee, with a maximum of once per year.