(a) A system review is required for a licensee or permit holder that performs any of the following services:
(1) engagements governed by the Statements on Auditing Standards of the American Institute of Certified Public Accountants; or
(2) engagements governed by the government auditing standards issued by the U.S. Government Accountability Office;
(3) examinations of prospective financial information under:
(i) the Statements on Standards for Attestation Engagements of the American Institute of Certified Public Accountants; or
(ii) the government auditing standards issued by the U.S. Government Accountability Office; or
(4) audits of issuers not registered with the U.S. Securities and Exchange Commission that are performed under standards of the Public Company Accounting Oversight Board.
(b) An engagement review is required for a licensee or permit holder not required to have a system review that performs any of the following services:
(1) review of historical financial statements in accordance with the Statements on Standards for Accounting and Review Services of the American Institute of Certified Public Accountants;
(2) compilation of historical financial statements with disclosures performed under the Statements on Standards for Accounting and Review Services of the American Institute of Certified Public Accountants;
(3) compilation of historical financial statements that omit substantially all disclosures performed under the Statements on Standards for Accounting and Review Services of the American Institute of Certified Public Accountants; or
(4) engagements performed under the Statements on Standards for Attestation Engagements of the American Institute of Certified Public Accountants other than the examination of prospective financial statements.