"Has improper value for" is a predefined property to track input errors for irregular value annotations that was likely caused by type or allowed value restrictions.
en:XML schema for an authority element set that may be used to provide metadata about authorized forms of agents (e.g., people, organizations), events (e.g., conferences, meetings), and terms (e.g., topics, geographics, genres) +
XML schema for an authority element set that may be used to provide metadata about authorized forms of agents (e.g., people, organizations), events (e.g., conferences, meetings), and terms (e.g., topics, geographics, genres) +
