A Texas Subpoena — Criminal is a legal document issued by a court in the state of Texas to compel a witness to appear in court or to produce documents or other evidence in a criminal case. There are two types of Texas Subpoena — Criminal: SubpoenDuckseCecumum, which requires the recipient to produce documents, and Subpoena Ad Testificandum, which requires the recipient to appear in court and provide testimony. The subpoena must include the name and address of the person to whom the subpoena is directed, the name of the court, the case number, the date and time the recipient must appear in court, and any relevant documents the witness is required to produce.