Texas Certificate of Service is a document used to prove that service of process has been effectuated according to the requirements of Texas law. It is a sworn statement signed by the server, attesting to the service of the process. It is issued by the court clerk and includes the date, time, manner, and location of service. The Texas Certificate of Service is then filed with the court and is available to the parties in the case. There are three types of Texas Certificates of Service: personal service, substituted service, and constructive service. Personal service is the most common form of service, in which the process server delivers the documents directly to the defendant. Substituted service is used when the process server is unable to deliver the documents to the defendant and instead leaves them with a responsible adult at the defendant’s home or workplace. Constructive service involves service by publication, in which the court orders the documents to be published in a newspaper.