"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.
"Has subobject" is a predefined property representing a container construct that allows to accumulate property-value assignments similar to that of a normal wiki page.
en:Identifier of a physical or digital object. The identifier represents the unique key for identifying a unit. It is used as a key element for connecting the units of a workflow and dataflow. Numeric or alphanumeric characters are possible +
Identifier of a physical or digital object. The identifier represents the unique key for identifying a unit. It is used as a key element for connecting the units of a workflow and dataflow. Numeric or alphanumeric characters are possible +