As ISO 21090, this can be a unit designator, such as apartment number, suite number, or floor. There may be several unit designators in an address (e.g., "3rd floor, Appt. 342"). This can also be a designator pointing away from the location, rather than specifying a smaller location within some larger one (e.g. Dutch "t.o." means "opposite to" for house boats located across the street facing houses).
Specializes
ADXP.AL
Constraints
| Type | Name | Specification |
|---|---|---|
| Address part type = 'ADL' | Invariant | inv: type = AddressPartType.ADL |