Physical attributes of a carrier where type, format, and extent of carrier cannot be distinguished in a machine-readable manner, and thus cannot be mapped to more specific data elements.
Usage Note
Use only when type, format, and extent of carrier cannot be distinguished in a machine-readable manner, and thus cannot be mapped to more specific data elements. Used to map data elements from one schema to another, when the elements are provided in a string and cannot be readily distinguished from one another The MARC 300 field is a case in point.
