Fastly Max-Planck-Institut fuer Informatik AS58280.net This document provides guidance to avoid carrying Resource Public Key Infrastructure (RPKI) derived Validation States in Transitive Border Gateway Protocol (BGP) Path Attributes. Annotating routes with attributes signaling validation state may flood needless BGP UPDATE messages through the global Internet routing system, when, for example, Route Origin Authorizations are issued, revoked, or RPKI-To- Router sessions are terminated. Operators SHOULD ensure Validation States are not signalled in transitive BGP Path Attributes. Specifically, Operators SHOULD NOT group BGP routes by their Prefix Origin Validation state into distinct BGP Communities.