This is implemented as described in ISO 21090.

Specializes

QTY

Attributes

Name	Data type	Occurs	Description
value	Real	0..1	This is implemented as described in ISO 21090.
precision	Integer	0..1	This is implemented as described in ISO 21090.
currency	Code	0..1	This is implemented as described in ISO 21090.

Constraints

Type	Name	Specification
null or currency	Invariant	inv: isNull xor currency.oclIsDefined
null or value	Invariant	inv: isNull xor value.oclIsDefined