How to retrieve supplier record using SOA web service?

Hello,

I have been using the POS_Vendor_Pub_Pkg PL/SQL package deployed as a wsdl web service. I am able to successfully use the Create_Vendor and Update_Vendor methods, however I don't understand how I am suppose to retrieve a supplier record.

For example, when I create a supplier using Create_Vendor via SoapUI I receive the following envelope in response:

<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">

   <env:Header/>

   <env:Body>

      <OutputParameters xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.oracle.com/apps/pos/soaprovider/plsql/pos_vendor_pub_pkg/create_vendor/