我们有一个 Web 服务，我们在 Developer Studio 中使用 Call Mediator 调用它，直到调用阶段一切正常，然后我们将 Web 服务输出（内部正文）作为 Mapper 输入，但我们收到错误：“输入类型不正确或在消息有效负载”。我的简单输入 XML 如下，因为我不知道为什么输入 xml 中介无法读取此内容：
<?xml version='1.0' encoding='utf-8'?>
<ns0:getPurchaseOrderResponse xmlns:ns0="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/types/">
<ns1:result xsi:type="ns2:PurchaseOrderResult" xmlns:ns2="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/" xmlns:ns1="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/types/" xmlns:tns="http://xmlns.oracle.com/adf/svc/errors/" xmlns:ns0="http://xmlns.oracle.com/adf/svc/types/" xmlns:ns9="http://xmlns.oracle.com/apps/prc/po/viewDocument/publicFlex/purchasingDocumentHeader/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ns2:Value>
<ns2:POHeaderId>300000001085237</ns2:POHeaderId>
</ns2:Value>
</ns1:result>
</ns0:getPurchaseOrderResponse>
错误日志：
TID: [-1234] [] [2017-02-25 14:47:40,621] WARN {org.wso2.carbon.mediator.datamapper.engine.input.readers.XMLInputReader} - Element name not found : ns1:getPurchaseOrderResponse {org.wso2.carbon.mediator.datamapper.engine.input.readers.XMLInputReader}
TID: [-1234] [] [2017-02-25 14:47:40,621] ERROR {org.wso2.carbon.mediator.datamapper.DataMapperMediator} - DataMapper mediator : mapping failed {org.wso2.carbon.mediator.datamapper.DataMapperMediator}
Input type is incorrect or Invalid element found in the message payload : ns1:getPurchaseOrderResponse
at org.wso2.carbon.mediator.datamapper.engine.input.readers.XMLInputReader.xmlTraverse(XMLInputReader.java:170)
at org.wso2.carbon.mediator.datamapper.engine.input.readers.XMLInputReader.read(XMLInputReader.java:117)
at org.wso2.carbon.mediator.datamapper.engine.input.InputBuilder.buildInputModel(InputBuilder.java:59)
at org.wso2.carbon.mediator.datamapper.engine.core.mapper.MappingHandler.doMap(MappingHandler.java:67)
at org.wso2.carbon.mediator.datamapper.DataMapperMediator.transform(DataMapperMediator.java:306)
at org.wso2.carbon.mediator.datamapper.DataMapperMediator.mediate(DataMapperMediator.java:256)
at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:97)
at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:260)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.mediateFromContinuationStateStack(Axis2SynapseEnvironment.java:766)
at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:282)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:554)
at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:188)
at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:261)
at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
inputpo.xml（输入数据映射器的输入 Xml）
<?xml version='1.0' encoding='utf-8'?>
<ns0:getPurchaseOrderResponse
xmlns:ns0="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/types/">
<ns1:result
xmlns:ns1="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/types/"
xmlns:tns="http://xmlns.oracle.com/adf/svc/errors/"
xmlns:ns0="http://xmlns.oracle.com/adf/svc/types/"
xmlns:ns2="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/"
xmlns:ns9="http://xmlns.oracle.com/apps/prc/po/viewDocument/publicFlex/purchasingDocumentHeader/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns2:PurchaseOrderResult">
<ns2:Value>
<ns2:POHeaderId>300000001085237</ns2:POHeaderId>
<ns2:OrderNumber>ESL-PO-4</ns2:OrderNumber>
<ns2:OrderRevision xsi:nil="true"/>
<ns2:DocumentTypeCode>STANDARD</ns2:DocumentTypeCode>
<ns2:DocumentType>Purchase Order</ns2:DocumentType>
<ns2:DocumentStyleId>1</ns2:DocumentStyleId>
<ns2:DocumentStyle>Purchase Order</ns2:DocumentStyle>
<ns2:ProcurementBUId>300000001071236</ns2:ProcurementBUId>
<ns2:ProcurementBusinessUnit>Etisalat Lanka Private Limited</ns2:ProcurementBusinessUnit>
<ns2:RequisitioningBUId>300000001071236</ns2:RequisitioningBUId>
<ns2:RequisitioningBusinessUnit>Etisalat Lanka Private Limited</ns2:RequisitioningBusinessUnit>
<ns2:SoldToBUId>300000001071236</ns2:SoldToBUId>
<ns2:SoldToBusinessUnit xsi:nil="true"/>
<ns2:DocumentStatusCode>INCOMPLETE</ns2:DocumentStatusCode>
<ns2:DocumentStatus>Incomplete</ns2:DocumentStatus>
<ns2:BuyerId>300000001092055</ns2:BuyerId>
<ns2:BuyerName>PwC, Etisalat</ns2:BuyerName>
<ns2:BuyerEmail>etisalatpwcteam@gmail.com</ns2:BuyerEmail>
<ns2:CreationDate>2017-01-14T12:00:35.0Z</ns2:CreationDate>
<ns2:SupplierId>300000001085017</ns2:SupplierId>
<ns2:Supplier>PwC Pakistan</ns2:Supplier>
<ns2:SupplierSiteId>300000001085112</ns2:SupplierSiteId>
<ns2:SupplierSiteCode>PWC Pakistan</ns2:SupplierSiteCode>
<ns2:SupplierContactId xsi:nil="true"/>
<ns2:SupplierContactName xsi:nil="true"/>
<ns2:SupplierContactEmail xsi:nil="true"/>
<ns2:SupplierCommunicationMethod>NONE</ns2:SupplierCommunicationMethod>
<ns2:SupplierCommunicationEmail xsi:nil="true"/>
<ns2:SupplierCommunicationFax xsi:nil="true"/>
<ns2:BillToLocationId>300000001071435</ns2:BillToLocationId>
<ns2:BillToLocationCode>Etisalat Head Office</ns2:BillToLocationCode>
<ns2:DefaultShipToLocationId>300000001071495</ns2:DefaultShipToLocationId>
<ns2:DefaultShipToLocationCode>Etisalat Main Warehouse</ns2:DefaultShipToLocationCode>
<ns2:CurrencyCode>PKR</ns2:CurrencyCode>
<ns2:Currency>Pakistan Rupee</ns2:Currency>
<ns2:ConversionRateTypeCode>User</ns2:ConversionRateTypeCode>
<ns2:ConversionRateType>User</ns2:ConversionRateType>
<ns2:ConversionDate xsi:nil="true"/>
<ns2:ConversionRate>243</ns2:ConversionRate>
<ns2:OrderedAmount currencyCode="PKR">3144.00</ns2:OrderedAmount>
<ns2:TotalTaxAmount currencyCode="PKR">0</ns2:TotalTaxAmount>
<ns2:TotalAmount currencyCode="PKR">3144.00</ns2:TotalAmount>
<ns2:ProcurementCard xsi:nil="true"/>
<ns2:DocumentDescription xsi:nil="true"/>
<ns2:SupplierOrderNumber xsi:nil="true"/>
<ns2:RequiredAcknowledgmentCode>N</ns2:RequiredAcknowledgmentCode>
<ns2:RequiredAcknowledgment>None</ns2:RequiredAcknowledgment>
<ns2:AcknowledgmentDueDate xsi:nil="true"/>
<ns2:PaymentTermsId xsi:nil="true"/>
<ns2:PaymentTerms xsi:nil="true"/>
<ns2:CarrierId xsi:nil="true"/>
<ns2:Carrier xsi:nil="true"/>
<ns2:FreightTermsCode xsi:nil="true"/>
<ns2:FreightTerms/>
<ns2:FOBCode xsi:nil="true"/>
<ns2:FOB/>
<ns2:PayOnReceiptFlag>false</ns2:PayOnReceiptFlag>
<ns2:ConfirmingOrderFlag>false</ns2:ConfirmingOrderFlag>
<ns2:NoteToReceiver xsi:nil="true"/>
<ns2:NoteToSupplier xsi:nil="true"/>
<ns2:TaxationCountryCode>LK</ns2:TaxationCountryCode>
<ns2:TaxationCountry>Sri Lanka</ns2:TaxationCountry>
<ns2:DocumentFiscalClassificationCode xsi:nil="true"/>
<ns2:DocumentFiscalClassification xsi:nil="true"/>
<ns2:InterfaceSourceCode xsi:nil="true"/>
<ns2:ReferenceNumber xsi:nil="true"/>
<ns2:PurchaseOrderLine
xmlns:ns8="http://xmlns.oracle.com/apps/prc/po/viewDocument/publicFlex/purchasingDocumentLine/">
<ns2:LineNumber>1</ns2:LineNumber>
<ns2:POLineId>300000001085239</ns2:POLineId>
<ns2:LineTypeId>1</ns2:LineTypeId>
<ns2:LineType>Goods</ns2:LineType>
<ns2:ItemId>300000001075027</ns2:ItemId>
<ns2:ItemNumber>DEV123123L</ns2:ItemNumber>
<ns2:ItemRevision xsi:nil="true"/>
<ns2:ItemDescription>Nokia Handset</ns2:ItemDescription>
<ns2:CategoryId>300000001102045</ns2:CategoryId>
<ns2:CategoryName>Default Item Category</ns2:CategoryName>
<ns2:LineStatusCode xsi:nil="true"/>
<ns2:LineStatus/>
<ns2:SupplierItem xsi:nil="true"/>
<ns2:UnitOfMeasureCode>zzu</ns2:UnitOfMeasureCode>
<ns2:UnitOfMeasure>Unit</ns2:UnitOfMeasure>
<ns2:Quantity unitCode="zzu">5</ns2:Quantity>
<ns2:Price currencyCode="PKR">100</ns2:Price>
<ns2:OrderedAmount currencyCode="PKR">500</ns2:OrderedAmount>
<ns2:TotalTaxAmount currencyCode="PKR">0</ns2:TotalTaxAmount>
<ns2:TotalAmount currencyCode="PKR">500</ns2:TotalAmount>
<ns2:SupplierConfigurationId xsi:nil="true"/>
<ns2:NegotiatedFlag>false</ns2:NegotiatedFlag>
<ns2:UNNumberId xsi:nil="true"/>
<ns2:UNNumber/>
<ns2:UNNumberDescription/>
<ns2:HazardClassId xsi:nil="true"/>
<ns2:HazardClass/>
<ns2:HazardClassDescription xsi:nil="true"/>
<ns2:SourceAgreementId xsi:nil="true"/>
<ns2:SourceAgreementProcurementBUId xsi:nil="true"/>
<ns2:SourceAgreementProcurementBusinessUnit xsi:nil="true"/>
<ns2:SourceAgreementNumber xsi:nil="true"/>
<ns2:SourceAgreementLine xsi:nil="true"/>
<ns2:SourceAgreementType xsi:nil="true"/>
<ns2:SourceAgreementStyle xsi:nil="true"/>
<ns2:NoteToSupplier xsi:nil="true"/>
<ns2:PurchaseOrderSchedule
xmlns:ns7="http://xmlns.oracle.com/apps/prc/po/viewDocument/publicFlex/purchasingDocumentSchedule/">
<ns2:ScheduleNumber>1</ns2:ScheduleNumber>
<ns2:ScheduleStatusCode xsi:nil="true"/>
<ns2:ScheduleStatus/>
<ns2:SupplierOrderLine xsi:nil="true"/>
<ns2:Quantity unitCode="zzu">5</ns2:Quantity>
<ns2:SecondaryUOMCode xsi:nil="true"/>
<ns2:SecondaryUOM/>
<ns2:SecondaryQuantity xsi:nil="true"/>
<ns2:OrderedAmount currencyCode="PKR">500</ns2:OrderedAmount>
<ns2:TotalTaxAmount currencyCode="PKR">0</ns2:TotalTaxAmount>
<ns2:TotalAmount currencyCode="PKR">500</ns2:TotalAmount>
<ns2:CountryOfOriginCode xsi:nil="true"/>
<ns2:CountryOfOrigin/>
<ns2:ShipToLocationId>300000001071495</ns2:ShipToLocationId>
<ns2:ShipToLocationCode>Etisalat Main Warehouse</ns2:ShipToLocationCode>
<ns2:ShipToOrganizationId>300000001101675</ns2:ShipToOrganizationId>
<ns2:ShipToOrganizationCode>EMW</ns2:ShipToOrganizationCode>
<ns2:ShipToOrganizationName>ESL Main Warehouse</ns2:ShipToOrganizationName>
<ns2:NeedByDate xsi:nil="true"/>
<ns2:PromisedDate>2017-01-16</ns2:PromisedDate>
<ns2:OriginalPromisedDate xsi:nil="true"/>
<ns2:DestinationTypeCode>EXPENSE</ns2:DestinationTypeCode>
<ns2:DestinationType>Expense</ns2:DestinationType>
<ns2:EarlyReceiptToleranceDays>5</ns2:EarlyReceiptToleranceDays>
<ns2:LateReceiptToleranceDays>5</ns2:LateReceiptToleranceDays>
<ns2:LastAcceptDate>2017-01-21</ns2:LastAcceptDate>
<ns2:ReceiptDateExceptionActionCode>WARNING</ns2:ReceiptDateExceptionActionCode>
<ns2:ReceiptDateExceptionAction>Warning</ns2:ReceiptDateExceptionAction>
<ns2:ShipToExceptionActionCode>WARNING</ns2:ShipToExceptionActionCode>
<ns2:ShipToExceptionAction>Warning</ns2:ShipToExceptionAction>
<ns2:ReceiptCloseTolerancePercent>0</ns2:ReceiptCloseTolerancePercent>
<ns2:OverReceiptTolerancePercent>0</ns2:OverReceiptTolerancePercent>
<ns2:OverReceiptActionCode>REJECT</ns2:OverReceiptActionCode>
<ns2:OverReceiptAction>Reject</ns2:OverReceiptAction>
<ns2:ReceiptRoutingId>2</ns2:ReceiptRoutingId>
<ns2:ReceiptRouting>Inspection required</ns2:ReceiptRouting>
<ns2:AllowSubstituteReceiptsFlag>false</ns2:AllowSubstituteReceiptsFlag>
<ns2:MatchApprovalLevelCode>4-Way</ns2:MatchApprovalLevelCode>
<ns2:InvoiceMatchOptionCode>R</ns2:InvoiceMatchOptionCode>
<ns2:InvoiceMatchOption>Receipt</ns2:InvoiceMatchOption>
<ns2:InvoiceCloseTolerancePercent>0</ns2:InvoiceCloseTolerancePercent>
<ns2:AccrueAtReceiptFlag>true</ns2:AccrueAtReceiptFlag>
<ns2:TransactionBusinessCategoryCode>PURCHASE_TRANSACTION</ns2:TransactionBusinessCategoryCode>
<ns2:TransactionBusinessCategory>Purchase Transaction</ns2:TransactionBusinessCategory>
<ns2:ProductTypeCode>GOODS</ns2:ProductTypeCode>
<ns2:ProductType>Goods</ns2:ProductType>
<ns2:ProductFiscalClassificationId xsi:nil="true"/>
<ns2:ProductFiscalClassification xsi:nil="true"/>
<ns2:ProductCategoryCode xsi:nil="true"/>
<ns2:ProductCategory/>
<ns2:IntendedUseId xsi:nil="true"/>
<ns2:IntendedUse/>
<ns2:UserDefinedFiscalClassificationCode xsi:nil="true"/>
<ns2:UserDefinedFiscalClassification/>
<ns2:TaxClassificationCode xsi:nil="true"/>
<ns2:TaxClassification/>
<ns2:AssessableAmount currencyCode="PKR">500</ns2:AssessableAmount>
<ns2:NoteToReceiver xsi:nil="true"/>
<ns2:PurchaseOrderDistribution
xmlns:ns6="http://xmlns.oracle.com/apps/prc/po/viewDocument/publicFlex/purchaseOrderDistribution/">
<ns2:DistributionNumber>1</ns2:DistributionNumber>
<ns2:Quantity unitCode="zzu">5</ns2:Quantity>
<ns2:OrderedAmount currencyCode="PKR">500</ns2:OrderedAmount>
<ns2:TotalTaxAmount currencyCode="PKR">0</ns2:TotalTaxAmount>
<ns2:TotalAmount currencyCode="PKR">500</ns2:TotalAmount>
<ns2:DestinationSubinventory xsi:nil="true"/>
<ns2:RequesterId>300000001092055</ns2:RequesterId>
<ns2:RequesterName>PwC, Etisalat</ns2:RequesterName>
<ns2:DeliverToLocationId>300000001071495</ns2:DeliverToLocationId>
<ns2:DeliverToLocationCode>Etisalat Main Warehouse</ns2:DeliverToLocationCode>
<ns2:Requisition xsi:nil="true"/>
<ns2:RequisitionLine xsi:nil="true"/>
<ns2:DestinationChargeAccountId xsi:nil="true"/>
<ns2:DestinationChargeAccount xsi:nil="true"/>
<ns2:POChargeAccountId>300000001072215</ns2:POChargeAccountId>
<ns2:POChargeAccount>01-000-25111001-0000-0000-0000-0000-01-0000-0000</ns2:POChargeAccount>
<ns2:POAccrualAccountId>300000001072215</ns2:POAccrualAccountId>
<ns2:POAccrualAccount>01-000-25111001-0000-0000-0000-0000-01-0000-0000</ns2:POAccrualAccount>
<ns2:DestinationVarianceAccountId xsi:nil="true"/>
<ns2:DestinationVarianceAccount xsi:nil="true"/>
<ns2:POVarianceAccountId>300000001072215</ns2:POVarianceAccountId>
<ns2:POVarianceAccount>01-000-25111001-0000-0000-0000-0000-01-0000-0000</ns2:POVarianceAccount>
<ns2:ConversionDate xsi:nil="true"/>
<ns2:ConversionRate>243</ns2:ConversionRate>
<ns2:DistributionFlexfield>
<ns6:PoDistributionId>300000001085241</ns6:PoDistributionId>
<ns6:__FLEX_Context xsi:nil="true"/>
<ns6:__FLEX_Context_DisplayValue xsi:nil="true"/>
<ns6:_FLEX_NumOfSegments>0</ns6:_FLEX_NumOfSegments>
</ns2:DistributionFlexfield>
</ns2:PurchaseOrderDistribution>
<ns2:ScheduleFlexfield>
<ns7:LineLocationId>300000001085240</ns7:LineLocationId>
<ns7:__FLEX_Context xsi:nil="true"/>
<ns7:__FLEX_Context_DisplayValue xsi:nil="true"/>
<ns7:_FLEX_NumOfSegments>0</ns7:_FLEX_NumOfSegments>
</ns2:ScheduleFlexfield>
</ns2:PurchaseOrderSchedule>
<ns2:LineFlexfield>
<ns8:PoLineId>300000001085239</ns8:PoLineId>
<ns8:__FLEX_Context xsi:nil="true"/>
<ns8:__FLEX_Context_DisplayValue xsi:nil="true"/>
<ns8:_FLEX_NumOfSegments>0</ns8:_FLEX_NumOfSegments>
</ns2:LineFlexfield>
</ns2:PurchaseOrderLine>
<ns2:HeaderFlexfield>
<ns9:PoHeaderId>300000001085237</ns9:PoHeaderId>
<ns9:__FLEX_Context xsi:nil="true"/>
<ns9:__FLEX_Context_DisplayValue xsi:nil="true"/>
<ns9:_FLEX_NumOfSegments>0</ns9:_FLEX_NumOfSegments>
</ns2:HeaderFlexfield>
</ns2:Value>
</ns1:result>
</ns0:getPurchaseOrderResponse>
我提供给代理服务的输入有效负载是：
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://xmlns.oracle.com/apps/prc/po/editDocument/purchaseOrderService/types/">
<soapenv:Header/>
<soapenv:Body>
<typ:getPurchaseOrder>
<typ:poHeaderId>300000001085237</typ:poHeaderId>
</typ:getPurchaseOrder>
</soapenv:Body>
</soapenv:Envelope>