What If I Forgot to Disclose Something on My Legal E&O Application? What If I Forgot to Disclose Something on My Legal E&O Application? Errors and omissions (E&O) insurance is a lawyer’s safety net against mistakes and malpractice claims. It is important to have sufficient coverage over the course of your career (and beyond) because everybody makes mistakes. Ensuring that you have adequate coverage begins with carefully completing the insurance application.