Client claims against investment dealers are almost always settled by contractual arbitration clauses, as securities dealers are required to settle disputes with their clients, in accordance with the terms of their affiliation with self-regulatory bodies such as the Financial Industry Regulatory Authority (formerly NASD) or the NYSE. Companies then began to include in their customer agreements arbitration agreements that required their customers to settle disputes.   Otherwise, what was legally binding can be nullified and cancelled from the beginning: that is, it was never done legally. The way to do that is repeal. The process of concluding a legally binding treaty may seem simple, but you need to ensure that the basics of forming contracts are met.