enquiry as well as any documents or other evidence, to the requesting Member State; and b) notify the competent authorities of the requesting Member State of actions and decisions taken by the competent authorities of the Member State where the Customs offence took place in accordance with the law in force in that Member State. 5. Member States shall keep information on Customs matters strictly confidential. ARTICLE 8 CO-OPERATION IN TRAINING Member States undertake to develop or adopt joint training programmes, exchange staff and share training facilities and resources. ARTICLE 9 COMMUNICATION OF CUSTOMS INFORMATION 1. Member States shall exchange information on matters relating to Customs and more particularly the following: a) changes in Customs legislation, procedures and duties and commodities subject to import or export restrictions; b) information relating to the prevention, investigation and repression of Customs offenses; and c) information required to implement and administer the regulations on the determination of