The International Recommendations for Tourism Statistics 2008, which has been released in 2010, provides a comprehensive methodological framework for collection and compilation of tourism statistics in all countries irrespective of the level of development of their statistical systems. The publication also contains a wealth of information that might be of interest to data users who would like to understand better the nature of tourism data. The international recommendations were drafted by the World Tourism Organization in close cooperation with the UN DESA Statistics Division, the International Labour Organization and other members of the Inter-Agency Coordination Group on Tourism Statistics.

The Supplement covers a number of topics deemed to be beneficial to trade data compilers, including an overview of compiling practices, the revised International convention on the simplification and harmonization of customs procedures (revised Kyoto Convention), the 2007 edition of the Harmonized Commodity Description and Coding System, specific compilation issues such as goods for processing and re-exports and an overview of the differences between IMTS and general merchandise.