The Part IV articles, as well as the preamble, are at one time designated as «primarily for states», and not for businessmen who attempt to use the Convention for international trade. However, they can have a significant impact on the practical applicability of the ICSG and therefore require careful consideration to determine each case. By 2020, the agreement has been ratified by 94 countries, which together account for a significant share of world trade.   As a result, the CISG is considered one of UNCITRAL`s greatest successes and the «most successful international document» in the single international law of sale because its parts represent «every geographic region, every stage of economic development and every important legal, social and economic system.»  Uniform conventions indicated that the CISG had «the greatest influence on global cross-border trade law,» including among non-governmental states.  It is also the basis of the annual Willem C. Vis International Commercial Arbitration Moot, one of the largest and most distinguished international Moot Court competitions in the world. The uniform application of the CISG is problematic because the courts are not willing to «use solutions adopted in the same place by the courts of other countries», which has led to inconsistent decisions.  Thus, in a case involving the export of New Zealand mussels to Germany by a Swiss company whose over-cadmium content exceeds German standards, the Bundesgerichtshof decided that it was not the seller`s duty to ensure that the products complied with German health rules.  This situation was contrary to a subsequent decision in which an Italian cheese exporter did not comply with French packaging rules and the French court had decided that it was the seller`s duty to ensure compliance with French regulations.  One case that illustrates this potential problem is Allied Dynamics Corp. v. Kennametal, Inc., 2014 WL 3845244 (E.D.N.Y.
2014). The main issue in this case was whether a forum selection clause was part of the contract between Allied, a New York buyer, and Kennametal, the parent company of MFS, an Italian company that manufactures investment moulding parts for gas turbines. This response dealt with the rules of contract formation. Allied did not want a disputed information selection clause in Milan, Italy, in Kennametal`s documents to be part of the sales contract.