Hello Alex once, i' have read the WS-I Basic profile. but i'm still having the same error. Is there some thing wrong in my loanapproval.bpel when copying the variable parts? <process name="loanapproval" suppressJoinFailure="yes" targetNamespace="urn:samples:loanapproval" xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/" xmlns:tns="urn:samples:loanapproval" xmlns:loanapproval="urn:samples:loanapproval" xmlns:schufa="urn:samples:schufa" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:bpel="http://schemas.xmlsoap.org/ws/2003/03/business-process/&... xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://schemas.xmlsoap.org/ws/2003/03/business-p... | http://schemas.xmlsoap.org/ws/2003/03/business-process/"> | <partnerLinks> | <partnerLink name="LoanProcessing" partnerLinkType="loanapproval:LoanProcessingPLT" myRole="lender"/> | <partnerLink name="SchufaLink" partnerLinkType="tns:SchufaPLT" partnerRole="schufa"/> | </partnerLinks> | <variables> | <variable name="applyProcessRequest" messageType="loanapproval:applyRequest"/> | <variable name="applyProcessResponse" messageType="loanapproval:applyResponse"/> | <variable name="schufaRequest" messageType="schufa:validCustomerRequest"/> | <variable name="schufaResponse" messageType="schufa:validCustomerResponse"/> | </variables> | <sequence> | <receive createInstance="yes" name="LoanApplication" operation="apply" partnerLink="LoanProcessing" portType="loanapproval:LoanProcessPortType" variable="applyProcessRequest"/> | <assign name="AssignLoanInfo_forApproval"> | <copy> | <from variable="applyProcessRequest" query="/loanRequestParameters/lastName" part="loanRequestParameters"/> | <to variable="schufaRequest" part="_surname"/> | </copy> | <copy> | <from variable="applyProcessRequest" query="/loanRequestParameters/firstName" part="loanRequestParameters"/> | <to variable="schufaRequest" part="_firstname"/> | </copy> | </assign> | <invoke inputVariable="schufaRequest" name="SchufaCheck" operation="validCustomer" outputVariable="schufaResponse" partnerLink="SchufaLink" portType="schufa:SchufaWS"/> | <assign name="AssignSchufaDecision"> | </copy--> | <copy> | <from variable="schufaResponse" part="validCustomerReturn"/> | <to variable="applyProcessResponse" query="/loanResponse/approved" part="loanResponse"/> | </copy> | </assign> | <reply name="ApprovalDecision" operation="apply" partnerLink="LoanProcessing" portType="loanapproval:LoanProcessPortType" variable="applyProcessResponse"/> | </sequence> | </process> I haved readed the similar issue in http://www.jboss.com/index.html?module=bb&op=viewtopic&t=75133 an the developperworks: http://www-128.ibm.com/developerworks/webservices/library/ws-tip-namespac.... Any suggestion to find out the problem? Thanks once again View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3999261#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...