For notice of a breach of contract, provide the names of the parties and the agreement itself.

Insert the date when the last party signed the agreement, or the "Effective Date," if one exists.

Cite the clauses that were broken, paraphrase their terminology, and clearly explain how the other party violated the agreement. You should also explain how the other party's activities led to the violation.

Be thorough and use professional, direct language.

Set a timeframe by which the offending party must make good on their violation before receiving notice that a breach has occurred.