It helps if you fill in the top part of the form with the case and court information. The documents are listed in the Attachment to Proof of Service–Civil (Documents Served) (form POS-040(D)).The forms listed below cover local court policies related to family law. Prepare the Certificate of Service – A Certificate of Service is a document that confirms you served a certain document. File and maintain a verified certificate of registration as a Process Server with the San Bernardino Recorder-County Clerk. As a matter of law, your attorney was required to file a certificate of service of the responses served on the opposing counsel.