<xsd:complexType name="ObservationFrequency">
<xsd:annotation>
<xsd:documentation xml:lang="en">A type defining the frequency at which calculation period end dates occur within the regular part of the calculation period schedule and thier roll date convention. In case the calculation frequency is of value T (term), the period is defined by the swap\swapStream\calculationPerioDates\effectiveDate and the swap\swapStream\calculationPerioDates\terminationDate.</xsd:documentation>
</xsd:annotation>
<xsd:complexContent>
<xsd:extension base="Period">
<!--2015-01-13:GFXD: no need to support the concept such as EOM, etc. for observation or accrual expiry or settlement period dates. -->
<xsd:sequence>
<!--2015-01-08:FpML FX WG: Need to specify something like roll convention. One of the use cases’ example: EOM for monthly frequency. It is also clearer when day of the week specified for weekly frequency rather than inferring it from the start date.-->
<xsd:element name="periodConvention" type="RollConventionEnum" minOccurs="0">
<xsd:annotation>
<xsd:documentation xml:lang="en">Used in conjunction with a frequency and the regular period start date of an observation period, determines each observation period end date within the regular part of a observation period schedule.</xsd:documentation>
</xsd:annotation>
</xsd:element>
</xsd:sequence>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>
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