ARTICLE 2 OBJECTIVE The objective of this Annex is to promote co-operation among Member States in simplifying and harmonising trade documentation and procedures for the purpose of facilitating intra-SADC trade. ARTICLE 3 REDUCTION OF COSTS OF TRADE DOCUMENTATION Member States undertake to reduce the cost of all trade documentation and procedures by: a) aligning intra-SADC and international trade documentation on the United Nations Layout Key; b) reducing to a minimum the number of national documents and copies required for intra­ community and international trade transactions; c) harmonising the nature of the information to be contained in documents referred to in sub-paragraph (a) of this paragraph; d) reducing to a minimum the number of institutions required to handle documents referred to in sub-paragraph (a) of this paragraph; e) centralising to the extent possible the issuing and processing of documents required for intra-SADC and international trade.