After the Affidavit of Service is done, it must be filed with the Court. Intheblanks form required for any matter originating and electronically filed in Supreme or Surrogate's Courts in Richmond County.An affidavit is simply a written statement made under oath. It need not be for a court case. Fill out the Affidavit in Response form, in addition to any other forms. You must say in your Affidavit that your information is based on what someone else told you and you must believe the information to be true.