Professional liability insurance

Professional liability insurance (PLI), also called professional indemnity insurance (PII) and commonly known as errors & omissions (E&O) in the US, is a form of liability insurance which helps protect professional advising, consulting, and service-providing individuals and companies from bearing the full cost of defending against a negligence claim made by a client in a civil lawsuit. The coverage focuses on alleged failure to perform on the part of, financial loss caused by, and error or omission in the service or product sold by the policyholder.

Source: Wikipedia — Professional liability insurance (CC BY-SA 4.0)