The type dx:issuerType defines the possible values for the element issuer, which is called from the type dx:identificationType
The tree structure of the type dx:issuerType has the following appearance:
<xs:simpleType name="issuerType">
<xs:restriction base="xs:string">
<xs:enumeration value="manufacturer"/>
<xs:enumeration value="laboratory"/>
<xs:enumeration value="client"/>
<xs:enumeration value="customer"/>
<xs:enumeration value="owner"/>
<xs:enumeration value="enveloper"/>
<xs:enumeration value="other"/>
</xs:restriction>
</xs:simpleType>