Artikel 15

1. On request, officials designated by the requesting Customs Administration may, with the authorization of the requested Customs Administration and subject to conditions the latter may impose, for the purpose of investigating a customs offence:
a) examine, in the offices of the requested Customs Administration, documents and any other information in respect of that customs offence, and be supplied with copies thereof;
b) be present during an inquiry conducted by the requested Customs Administration in the territory of the State of the requested Customs Administration, which is relevant to the requesting Customs Administration; these officials shall only have an advisory role.
2. The officials of the requesting Customs Administration, authorized to conduct inquiry of customs offences, may ask officials of the requested Customs Administration to review relevant books, registers and other documents or data-media and to provide copies thereof or to provide any information related to customs offences.
3. When officials of either Customs Administration are present in the territory of the State of the other Customs Administration under the terms of this Agreement, they must at all times be able to furnish, in a language acceptable to the other Customs Administration, proof of their official identity and status in their Customs Administration or other government agency.
4. Upon request, the requesting Customs Administration shall be advised of the time and place of the action carried out in connection with the request with a view to coordinating this action.