The Uniform Customs and Practice for Documentary Credits (UCP) is a set of rules on the issuance and use of letters of credit. The UCP is utilised by bankers and commercial parties in more than 175 countries in trade finance. Historically, the commercial parties, particularly banks, have developed the techniques and methods for handling letters of credit in international trade finance. This practice has been standardized by the ICC (International Chamber of Commerce) by publishing the UCP in 1933 and subsequently updating it throughout the years. The ICC has developed and moulded the UCP by regular revisions, the current version being the UCP600.
Source: http://en.wikipedia.org/wiki/Uniform_Customs_and_Practice_for_Documentary_Credits
