<xs:simpleType name="AssignableCauseEnumType"><xs:annotation><xs:documentation>The AssignableCauseEnumType enumerates various common causes that can be assigned to a control issue.</xs:documentation></xs:annotation><xs:restriction base="xs:NMTOKEN"><xs:enumeration value="POWER_FAILURE"/><xs:enumeration value="BROKEN_TOOL"/><xs:enumeration value="COMPUTER_CRASH"/><xs:enumeration value="WEATHER_EVENT"/><xs:enumeration value="OTHER"/></xs:restriction></xs:simpleType>