Standard 2310 – Identifying Information Internal auditors must identify sufficient, reliable, relevant, and useful information to achieve the engagement’s objectives. Interpretation: Sufficient information is factual, adequate, and convincing so that a prudent, informed person would reach the same conclusions as the auditor. Reliable information is the best attainable information through the use of appropriate engagement techniques. Relevant information supports engagement observations and recommendations and is consistent with the objectives for the engagement. Useful information helps the organization meet its goals.