The Philippine Standard on Auditing 705 (revised) outlines the auditor's responsibility for issuing modified opinions on financial statements in cases of material misstatement or insufficient audit evidence. It details the types of modifications—including qualified, adverse, and disclaimer of opinion—and specifies the circumstances under which each is appropriate. Effective from December 15, 2009, this standard emphasizes the importance of communication with governance bodies and the proper formulation of auditor’s reports when modifications occur.