to allow free text for channels and expand from the previous list | 
                           
| Attribute | RequesterType/@Channel | 
<xs:simpleType name="ChannelType" id="Channel_Type"> <xs:annotation> <xs:documentation>to allow free text for channels and expand from the previous list</xs:documentation> </xs:annotation> <xs:union memberTypes="xs:string ChannelCodeType"/> </xs:simpleType>  |