Certificate of Service. Form Number. 12.914.If you are looking for information on issuing a foreign subpoena pursuant to UIDDA Uniform Interstate Depositions and Discovery Act in Hillsborough County After you have completed the forms and have signed and notarized them, make 2 complete copies of everything you have signed (one copy is for your records). This form is filed with the Court after the service is done. This form is called an Affidavit of Service. The server then must complete and sign the back of the original summons form and return it to you so you can file it with the court. This Electronic Services page is your electronic entrance to the Judicial Branch. Court staff MAY NOT give legal advice, prepare your papers or act as your attorney. Deposition Subpoena.