Unless delegated, acceptance of supplies or services is the responsibility of the:

The end user is typically the individual or entity that utilizes the supplies or services; however, they do not have the formal authority to accept these goods on behalf of the government. Their role may include providing feedback on the usability or functionality of the supplies, but they lack the contractual authority necessary for acceptance.

While the contracting officer's technical representative (COTR) may assist in monitoring contract performance and ensuring compliance with technical specifications, they do not have the final authority to accept supplies or services unless such authority has been delegated by the contracting officer. Their role is primarily advisory and oversight-oriented.

The project manager generally oversees the execution of projects and may coordinate between various teams, but they do not possess the authority to formally accept supplies or services. Acceptance is a contractual function that rests solely with the contracting officer unless delegated, making the project manager’s role more about project execution than contract acceptance.