The single-window system or single-window concept is a trade facilitation concept which allows an international (cross-border) trader to submit information to a single agency, rather than having to deal with multiple agencies in multiple locations to obtain the necessary papers, permits, and clearances to complete their import or export processes. There is an obvious time saving benefit to the single window system. The concept is recognised by organisations such as the United Nations Economic Commission for Europe (UNECE) and its Centre for Trade Facilitation and Electronic Business (UN/CEFACT), World Customs Organization (WCO), the United Nations Network of Experts for Paperless Trade and Transport in Asia and the Pacific (UNNExT), and the Association of Southeast Asian Nations (ASEAN). Concept The main value proposition for having a single window for a country or economy is to increase the efficiency through time and cost savings for traders in their dealings with government authorities for obtaining the relevant clearance and permit(s) for moving cargoes across national or economic borders. In a traditional pre-single-window environment, traders may have had to contend with visits and dealings with multiple government agencies in multiple locations to obtain the necessary papers, permits, and clearances to complete their import or export processes. A common definition of the term "single window" is: "A facility that allows parties involved in trade and transport to lodge standardized information and documents with a single entry point to fulfill all import, export, and transit-related regulatory requirements. If information is electronic then individual data elements should only be submitted once." The concept is recognised and promoted by several world organisations that are concerned with trade facilitation. Amongst these are the United Nations Economic Commission for Europe (UNECE) and its Centre for Trade Facilitation and Electronic Business (UN/CEFACT), World Customs Organization (WCO), the United Nations Network of Experts for Paperless Trade and Transport in Asia and the Pacific (UNNExT), and the Association of Southeast Asian Nations (ASEAN). Singapore, Sweden, the USA and New Zealand currently have Single Window systems in place. The diagram below illustrates an example of an implementation of a Single Window system within a country or economy. There are many actors and procedures required for international trade which may result in high costs and long waits. The reason why international trade needs practical support relatively more than domestic trade is the need for the inevitable controls of cross border regulatory Agencies (CBRAs). These inevitable