The CISG is the default applicable law when parties from two different signatory countries execute an agreement for the sale of goods unless they "opt out," The purpose of the CISG is to provide a modern, uniform and fair regime for contracts for the international sale of goods.We're going to be reviewing and going over the as is residential contract some of the best practices builds and clauses in here. In order to do business with Palm Beach County, vendors are required to create a Vendor. This article provides a general overview of the convention as well as a short comparative analysis to the Uniform Commercial Code (UCC).