<xs:attributeGroup name="coverageAttributes">
<xs:attribute name="stats-coverage" type="QCodeType" use="optional">
<xs:annotation>
<xs:documentation>A relative indication of how many statistics are included in the item. SportsML vocab uri: http://cv.iptc.org/newscodes/spstatscoverage/</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="team-coverage" use="optional">
<xs:annotation>
<xs:documentation>Indicates whether the item contains information about one team, or
many teams.</xs:documentation>
</xs:annotation>
<xs:simpleType id="teamCoverage">
<xs:restriction base="xs:string">
<xs:enumeration id="teamCoverageSingle-team" value="single-team">
<xs:annotation>
<xs:documentation>Contains only information about a single
team.</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration id="teamCoverageMulti-team" value="multi-team">
<xs:annotation>
<xs:documentation>Contains information about many or all teams in a
league.</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
in coverageAttributes we have:
https://cv.iptc.org/newscodes/spteamcoverage/ exists. So I think it's supposed to be a CV. But currently the schema defines it as an enum.
I guess this would be a breaking change so would need to go into SportsML 4.0 ??