Un convention on contracts for the international sale of goods cisg is a notable achievement by the un commission on international trade law uncitral to unify the law governing contracts for international sale of goods the cisg was adopted in 1980 and subsequently came into effect in 1988 historical background of cisg cisg is the outcome . Request pdf cisg and the unification of international trade law pushing the boundaries between domestic and unified laws this book explores the differences between unification and harmonization. Summary pushing the boundaries between domestic and unified laws this book explores the differences between unification and harmonization bruno zeller provides a critical examination of the convention for the international sale of goods cisg the advances of international jurisprudence and the role of domestic courts in order to consider whether unification is merely a myth or a reality. Pushing the boundaries between domestic and unified laws this book explores the differences between unification and harmonization bruno zeller provides a critical examination of the convention for the international sale of goods cisg the advances of international jurisprudence and the role of domestic courts in order to consider whether unification is merely a myth o