The following example shows the scope activity in the .bpel file after design completion. The Scope_AuthorizeCreditCard scope activity consists of activities that perform the following actions:

• A catch activity for catching faulted orders in which the credit card number is not provided or the credit type is not valid.

• A throw activity that throws a fault for orders that are not approved.

• An assign activity that takes the credit card type, credit card number, and purchase amount, and assigns this information to the input variable for the CreditCardAuthorizationService service.

• An invoke activity that calls a CreditCardAuthorizationService service to retrieve customer information.

• A switch activity that checks the results of the credit card validation.

<scope name="Scope_AuthorizeCreditCard">
    <variables>
        <variable name="lCreditCardInput"
            messageType="ns2:CreditAuthorizationRequestMessage"/>
        <variable name="lCreditCardOutput"
            messageType="ns2:CreditAuthorizationResponseMessage"/>
    </variables>
    <faultHandlers>
        <catch faultName="bpws:selectionFailure">
            <sequence>
                 <assign name="Assign_noCCNumber">
                     <copy>
                         <from expression="string('CreditCardCheck - NO
                             CreditCard')"/>
                         <to variable="gOrderProcessorFaultVariable"
                             part="code"/>
                     </copy>
                 </assign>
                 <throw name ="Throw_NoCreditCard"
                     faultVariable="gOrderProcessorFaultVariable"
                     faultName="ns9:OrderProcessingFault"/>
            </sequence>
        </catch>
        <catch faultName="ns2:InvalidCredit">
            <sequence>
                <assign name="Assign_InvalidCreditFault">
                    <copy>
                        <from expression="concat(bpws:getVariableData
                             ('gOrderInfoVariable','/ns4:orderInfoVOSDO/
                             ns4:CardTypeCode'), ' is not a valid 
                             creditcard type')"/>
                        <to variable="gOrderProcessorFaultVariable"
                            part="summary"/>
                    </copy>
                    <copy>
                        <from expression="string('CreditCardCheck - NOT VALID')"/>
                        <to variable="gOrderProcessorFaultVariable"
                            part="code"/>
                    </copy>
                </assign>
                <throw name="Throw_OrderProcessingFault"
                    faultName="ns9:OrderProcessingFault"
                    faultVariable="gOrderProcessorFaultVariable"/>
            </sequence>
        </catch>
    </faultHandlers>
    <sequence>
        <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"/>
        <switch name="Switch_EvaluateCCResult">
            <case condition="bpws:getVariableData('lCreditCardOutput','status','
                /ns8:status') != 'APPROVED'">
                <bpelx:annotation>
                    <bpelx:pattern>status &lt;&gt; approved</bpelx:pattern>
                </bpelx:annotation>
                <throw name="Throw_Fault_CC_Denied"
                    faultName="client:OrderProcessorFault"/>
            </case>
        /switch>
    </sequence>
</scope>