The required subgroupId attribute references the id of the subgroup with which this decimal value is associated.
Source
<xs:element name="SubgroupDecimal" type="SubgroupDecimalType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each SubgroupDecimal element in the list defines a decimal value associated with a subgroup id.</xs:documentation></xs:annotation></xs:element>
The required n attribute is the number of values in the list.
Source
<xs:complexType name="SubgroupDecimalArrayType"><xs:annotation><xs:documentation>A SubgroupDecimalArrayType defines a list of SubgroupDecimalType.</xs:documentation></xs:annotation><xs:sequence><xs:element name="SubgroupDecimal" type="SubgroupDecimalType" maxOccurs="unbounded"><xs:annotation><xs:documentation>Each SubgroupDecimal element in the list defines a decimal value associated with a subgroup id.</xs:documentation></xs:annotation></xs:element></xs:sequence><xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of values in the list.</xs:documentation></xs:annotation></xs:attribute></xs:complexType>
<xs:attribute name="n" type="NaturalType" use="required"><xs:annotation><xs:documentation>The required n attribute is the number of values in the list.</xs:documentation></xs:annotation></xs:attribute>