<xsd:group name="TradeLegFixedAmountChange.model"> <xsd:sequence> <xsd:element name="knownAmountReference" type="AmountReference" minOccurs="0" /> <xsd:element name="changeInKnownAmount" type="NonNegativeMoney" /> <xsd:element name="outstandingKnownAmount" type="NonNegativeMoney" /> </xsd:sequence> </xsd:group>