39 CFR § 962.23 - (Rule 23) Service.

---
identifier: "/us/cfr/t39/s962.23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "39 CFR § 962.23 - (Rule 23) Service."
title_number: 39
title_name: "Postal Service"
section_number: "962.23"
section_name: "(Rule 23) Service."
chapter_name: "UNITED STATES POSTAL SERVICE"
subchapter_number: "N"
subchapter_name: "PROCEDURES"
part_number: "962"
part_name: "ADMINISTRATIVE FALSE CLAIMS ACT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "31 U.S.C. 3801-12; 39 U.S.C. 401; 5 U.S.C. 554."
regulatory_source: "90 FR 33272, July 17, 2025, unless otherwise noted."
cfr_part: "962"
---


# 962.23 (Rule 23) Service.

If both parties are participating in the electronic filing system, separate service on the opposing party is not required. Otherwise, documents must be served personally or by mail on the opposing party, noting on the document filed, or on the transmitting letter, that a copy has been so furnished.