In this article, the author has commented and analyzed about of the excessive desproportion that contains in The Principles of International Commercial Contracts of the UNIDROIT, trying to match coincidences and differences within some continent legislations that have been incorporated under the name of “lesion”.

Also, it developes remedies for the establishment of the equilibrium of the benefits to the contractees, which objective is to show the reader the implications of its regulation in the document mentioned.