A: Process servers deliver or “serve” legal documents to a defendant or person involved in a court case. They must provide evidence that the legal papers were served, known as an affidavit of service or proof of service. Affidavit of service may need to be notarized and given to the individual or company who required that the papers be served. Processing serving laws differ by state, so each individual process servicer may have a distinctive way of carrying out things. Legal Beagle representatives are schooled in the specifics of State and Federal rules.