This image shows the Source:UpdateOrder.wsdl in the left side, containing the following entries:

<sources>
   tns:UpdateOrderStatus
     tns:orderId
     tns:orderStatus

The XSLT File:OrderProcessor.xsd in the right side, containing the following entries:

<target>
   updateOrderStatus
     orderId
     orderStatus

It shows items mapped from inp1:orderInfoVOSDO on the Source side to the opaque:opaqueElement on the XSLT File side.