<s:complexType name="ServerUpdateData">
     <s:element minOccurs="0" maxOccurs="1" name="updates" 
     type="s1:ArrayOfServerSyncUpdateData" />
     <s:element minOccurs="0" maxOccurs="1" name="fileUrls" 
     type="s1:ArrayOfServerSyncUrlData" />

updates: This field MUST be present. Each element in the array contains the update metadata. Its type is ArrayOfServerSyncUpdateData, whose format is as specified in section

fileUrls: This field MUST be present. It provides information on the content files referenced by the updates field. Its format is given as specified in section