<xsd:attribute name="chainCode" type="ota2-0400:StringTiny" use="optional"> <xsd:annotation> <xsd:documentation source="Description">Identifies the chain.</xsd:documentation> <xsd:appinfo> <otm:Example context="ph" xmlns:otm="http://www.OpenTravel.org/ns/OTA2/AppInfo_v01_00">MC</otm:Example> </xsd:appinfo> </xsd:annotation> </xsd:attribute>