- https://purl.semanticip.org/linked-data/sdmx/ML/ValidityPeriodType
TTL - complexType
ValidityPeriodType specifies inclusive start and end-dates for the subscription period.
- SDMXRegistrySubscription.xsd
<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="ValidityPeriodType">
<xs:annotation>
<xs:documentation>ValidityPeriodType specifies inclusive start and end-dates for the subscription period.</xs:documentation>
</xs:annotation>
<xs:sequence>
<xs:element name="StartDate" type="xs:date">
<xs:annotation>
<xs:documentation>StartDate is an inclusive start date for the subscription.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="EndDate" type="xs:date">
<xs:annotation>
<xs:documentation>EndDate is an inclusive end date for the subscription.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>