<xs:simpleType name="periodType"> <xs:restriction base="xs:string"> <xs:enumeration value="Day" /> <xs:enumeration value="FinancialPeriodBeginning" /> <xs:enumeration value="MonthBeginning" /> <xs:enumeration value="Period" /> <xs:enumeration value="QuarterBeginning" /> <xs:enumeration value="WeekBeginning" /> <xs:enumeration value="WeekNumber" /> <xs:enumeration value="YearBeginning" /> </xs:restriction> </xs:simpleType>