The BPEL code shown in the following example performs the synchronous invocation.

<assign name="Assign_CreditCheckInput">
    <copy>
        <from variable="gOrderInfoVariable"
            query="/ns4:orderInfoVOSDO/ns4:OrderTotal"/>
        <to variable="lCreditCardInput" part="Authorization"
            query="/ns8:AuthInformation/ns8:PurchaseAmount"/>
    </copy>
    <copy>
        <from variable="gOrderInfoVariable"
            query="/ns4:orderInfoVOSDO/ns4:CardTypeCode"/>
        <to variable="lCreditCardInput" part="Authorization"
            query="/ns8:AuthInformation/ns8:CCType"/>
    </copy>
    <copy>
        <from variable="gOrderInfoVariable"
            query="/ns4:orderInfoVOSDO/ns4:AccountNumber"/>
        <to variable="lCreditCardInput" part="Authorization"
            query="/ns8:AuthInformation/ns8:CCNumber"/>
    </copy>
</assign>
<invoke name="InvokeCheckCreditCard"
    inputVariable="lCreditCardInput"
    outputVariable="lCreditCardOutput"
    partnerLink="CreditCardAuthorizationService"
    portType="ns2:CreditAuthorizationPort"
    operation="AuthorizeCredit"/>