Answer: "If you have received a legal document called a subpoena from a process server, it is important that you know what this paper is and what it means to you. A subpoena is an order issued by the court, usually requiring you to appear in person at a certain place, date and time to testify as a witness about a particular case."
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ANSWER. A subpoena is a writ ordering a person to attend court. it is important because it someone’s a witness to give testimony or production of evidence.