Any party serving discovery shall file a certificate of service of discovery document. {Amended April 22, 2013}.To prepare the Certificate, follow the instructions on it. Interrogatories are served on the other parties in the case but are not filed with the Court. On ______ at ______ AM PM, or as soon thereafter as counsel may be heard, I shall appear before the. Honorable. The undersigned attorney of record certifies that a copy of the foregoing was served upon. The following interrogatories within twenty-eight days after service hereof. Instead, a party serving discovery shall file a certificate of service of discovery document. A party can only send 30 interrogatories. However, this number can be increased if the other party agrees or the court allows more.