Upload Attachment to Journal using Web Service Issue

Dear All,

I found this soap request to upload a file to a journal (header or batch):

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">

<soap:Body>

<ns1:uploadAttachment xmlns:ns1="http://xmlns.oracle.com/apps/financials/commonModules/shared/model/erpIntegrationService/types/">

<ns1:entityName>GL_JE_HEADERS</ns1:entityName>

<ns1:categoryName>GL_JE_HEADERS</ns1:categoryName>

<ns1:allowDuplicate>yes</ns1:allowDuplicate>

<ns1:attachmentRows xmlns:ns2="http://xmlns.oracle.com/apps/financials/commonModules/shared/model/erpIntegrationService/">

<ns2:UserKeyA>Journal header name</ns2:UserKeyA> 

<ns2:UserKeyB>Journal batch name</ns2:UserKeyB> 

<ns2:UserKeyC>Default_period_name/ns2:UserKeyC>

<ns2:UserKeyD>Structure instance name</ns2:UserKeyD>