In contract law, what typically signifies a completed duty of performance?

In contract law, the completion of a duty of performance is primarily indicated by meeting all defined conditions outlined in the contract. This means that all the obligations, responsibilities, and terms specified in the agreement have been satisfied according to the expectations of both parties. For a contract to be deemed fully performed, each party must deliver on their promises as detailed in the agreement, which often includes the delivery of goods, completion of services, or payment.

While verbal confirmation from other parties, written documentation, and acknowledgment from witnesses may have some relevance in the broader context of contractual agreements, they do not inherently signify that the contractual duties have been fully executed. The essence of contract performance lies in adhering to the stipulations clearly articulated in the contract itself, which established the grounds for what constitutes completion. Therefore, fulfilling all conditions in the contract is the most definitive marker of completed performance in the realm of contract law.