<xsd:group name="PrioritizedRateSource.model"> <xsd:annotation> <xsd:documentation xml:lang="en">Defines a primary and optional secondary rate sources</xsd:documentation> </xsd:annotation> <xsd:sequence> <xsd:element name="primaryRateSource" type="SettlementRateOption" minOccurs="0" /> <xsd:element name="secondaryRateSource" type="SettlementRateOption" minOccurs="0" maxOccurs="unbounded" /> </xsd:sequence> </xsd:group>