A District of Columbia Subpoena In A Civil Protection Order Case is a court document filed in the District of Columbia Superior Court that orders a person to appear in court to answer questions or provide testimony. Subpoenas can be issued to a party in the case or to a witness. There are two types of subpoenas in a civil protection order case: Subpoena Ducks Cecum, which orders the recipient to bring documents or other physical evidence to the court hearing; and Subpoena Ad Testificandum, which orders the recipient to appear in court to testify. The person receiving the subpoena must comply with the order. Failure to comply can result in serious legal consequences, including fines, jail time, or contempt of court.