One of the most popular accoutrement's for Appraisal Management Companies these days is a SEAL to bolster their claims of compliance with the Home Valuation Code of Conduct (HVCC).
"Certification refers to the confirmation of certain characteristics of an object, person, or organization. This confirmation is often, but not always, provided by some form of external review, education, or assessment. One of the most common types of certification in modern society is professional certification, where a person is certified as being able to competently complete a job or task, usually by the passing of an examination." - Wikipedia