SHALL NOT have mixed content except for white space If there is no information, the nullFlavor attribute shall have a value of 'NI' and
no address parts shall be present, otherwise there shall be no nullFlavor attribute,
and at least one of the address parts listed below shall be present.
Schematron assert
role
error
test
@nullFlavor or hl7:*
Message
If addr is not nullflavored at least one sub element has to be provided
The content of this element SHALL be selected EITHER from ValueSet ISO Country Alpha-2
urn:oid:2.16.840.1.113883.1.11.20300 DYNAMIC OR MAY be selected from ISO Country Alpha-3
2.16.840.1.113883.1.11.171 DYNAMIC, IF the country is not specified in ValueSet ISO
Country Alpha-2 urn:oid:2.16.840.1.113883.1.11.20300.