1.   The requesting competent authority shall respond promptly to any request for clarifications as referred to in Article 3(2) from the requested competent authority.

2.   The requested competent authority shall notify the requesting competent authority where it anticipates a delay of more than 5 working days beyond the estimated date of response specified in the acknowledgement of receipt referred to in Article 3(1).

3.   Where the request has been qualified by the requesting competent authority as urgent, the requested competent authority and the requesting competent authority shall agree on the frequency with which the requested competent authority will update the requesting competent authority on its handling of the request and on the date when it expects to provide a response.

4.   The requested competent authority and the requesting competent authority shall cooperate to resolve any difficulties that arise in executing the request.

5.   Competent authorities shall provide, where appropriate, feedback to each other on the usefulness of the assistance received, the outcome of the case in relation to which the assistance was sought and any problems encountered in providing such assistance.