UniversalPropertySubId Field

DefinitionA unique identifier for all subsets or shares of real property in the U.S. and Canada. This may include Stock Cooperatives, Community Apartment, Units for Rent, etc. Informally abbreviated as UPSI, it is based on country and local identification methods, just as the Universal Property Identifier (UPI), but it is limited to subsets or shares of real property. For cases of complete real property, please utilize the UniversalPropertyId field.