BS EN ISO 19160-4:2017

1   Scope This document defines key terms for postal addressing, postal address components and constraints on their use. Specifically, this document defines postal address components organized into three hierarchical levels:

       —   elements , such as organization name or postcode, which have well-defined conceptual meaning and are not themselves made up of subordinate  components , though they may be sub-divided for technical purposes; 
   
   
     
       —   constructs , such as organization identification, which group  elements  into units form a logical portion of a  postal address ; 
   
   
     
       —   segments , such as  addressee  specification, which group-related  postal address  constructs  and/or  postal address  elements  into units with a specific defined function. 
   
 

This document also specifies a mechanism for creation of sub-elements , which correspond to either sub-divisions of element content, such as door type or door indicator or to multiple occurrences and locations of elements in an address , such as l...