An Ohio Subpoena (Order To Appear) is a legal document issued by a court or other competent authority, requiring a witness to appear and testify in a court case. It is a type of compulsory process that is used to ensure the presence of a witness in court proceedings. There are two types of Ohio Subpoena: Subpoena Ducks Cecum and Subpoena Ad Testificandum. The Subpoena Ducks Cecum requires the witness to bring documents relating to the case while the Subpoena Ad Testificandum requires the witness to testify in court. Both of these types of Subpoenas are issued by a court or other competent authority and must be served on the witness in order to be valid. Failure to comply with an Ohio Subpoena may lead to serious legal consequences.