The Notitia Dignitatum (Latin for "The List of Offices") is a document of the late Roman Empire that details the administrative organization of the Eastern and Western Empires. It is unique as one of very few surviving documents of Roman government and describes several thousand offices from the imperial court down to the provincial level, diplomatic missions and army units. It is usually considered to be up to date for the Western Roman Empire in the 420s and for the Eastern or Byzantine Empire in the 390s. However, no absolute date is given in the text itself and omissions complicate deriving an absolute date from its content.