@Process annotation is found in $SOA_HOME/jboss-as/server/$SOA_CONF/deployers/esb.deployer/lib/jbossesb-rosetta.jar, which is the core library for JBoss ESB. Unfortunatelly this jar is not available in any public maven repositories AFAIK because the JBoss ESB project is not maven-based. Perhaps you can handle this library dependency more easily if you use JBoss Developers Studio with JBoss ESB feature. Hope this helps.