<xs:element name="TransmissionId">
    <xs:annotation>
        <xs:documentation> 
================================ TransmissionId ================================
An identifier for the NewsML document transmission. This should be unique among
all distinct transmissions from the same publisher. If a transmission is
repeated (perhaps because the sender is not confident that it was successfully
received) then the same TransmissionId content may be used, but a Repeat
attribute should be provided to distinguish the second transmission from the
first. The form that the value of the Repeat attribute takes is determined by
the provider. Likewise, the format for the TransmissionId itself is for the
provider to decide. It could for example consist of a channel identifier
followed by a sequence number.
================================================================================

			</xs:documentation>
    </xs:annotation>
    <xs:complexType>
        <xs:simpleContent>
            <xs:extension base="xs:string">
                <xs:attributeGroup ref="localid" />
                <xs:attribute name="Repeat" type="xs:string" />
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>
</xs:element>