What are the most important standards of ethics for accountants?

In accounting, ethics and integrity standards are based on a broad commitment to honesty, impartiality and objectivity. Ethical standards also require that accountants present information in the clearest and most accurate way possible, with the expectation that the information constitutes an independent report of a business' financial situation. In most cases, this requires not just observing professional rules but also recognizing the potential for harm, using reasoning and judgment to resolve ethical conflicts and displaying moral integrity and motivation to apply a resolution

Integrity by far is the most important ethic standard for Accountants  in addition to Professional Competence and behavior