Execution of requests 1. In order to comply with a request for assistance, the requested authority shall proceed, within the limits of its competence and available resources, as though it were acting on its own account or upon request of other authorities of that same Party, by supplying information already possessed, by carrying out appropriate inquiries, or by arranging for them to be carried out. This paragraph shall also apply to any other authority to which the request has been addressed by the requested authority when the latter cannot act on its own. 2. Requests for assistance shall be executed in accordance with the legal or regulatory provisions of the requested Party and the answer shall be sent at the latest within 120 days following the date of the receipt of the request. 3. Duly authorized officials of a Party may be present in the offices of the requested authority or any other concerned authority in accordance with paragraph 1, to obtain information related to activities that are or may be operations in breach of customs legislation which the applicant authority needs for purposes of this Chapter. 4. Duly authorized officials of a Party involved may be present at inquiries or verifications carried out in the territory of the other Party.