A notice of breach is a formal document that informs a party that the other party has failed to fulfill their obligations under a contract. In the context of the Mesa Arizona Notice of Breach of Contract for Failure to Make Payment, this notice serves as a critical step before pursuing further legal action. It allows the breaching party to acknowledge the issue and potentially resolve it before legal proceedings escalate. Using a service like US Legal Forms can simplify the process of drafting this important document.