Hello, would anyone be able to provide guidance on how to identify the object keys that need to be passed to properly identify a record for a given object?

Example: I'm working on reading customer notes from the soap api utilizing a web service against the NTS object, but I am not able to match/pull a record, below is the request. And i'm getting a record does not exist response. The challenge is that i'm not finding what combination of object keys need to be provided to match the record that does exists. 

<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wss="http://www.adonix.com/WSS" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
   <soapenv:Header/>
   <soapenv:Body>
      <wss:read soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
         <callContext xsi:type="wss:CAdxCallContext">
            <codeLang xsi:type="xsd:string">ENG</codeLang>
            <poolAlias xsi:type="xsd:string">{{X3SOAPPOOL}}</poolAlias>
            <poolId xsi:type="xsd:string"></poolId>
            <requestConfig xsi:type="xsd:string">adxwss.optreturn=json&adxwss.beautify=true</requestConfig>
         </callContext>
         <publicName xsi:type="xsd:string">ZNTS</publicName>
         <objectKeys xsi:type="wss:ArrayOfCAdxParamKeyValue" soapenc:arrayType="wss:CAdxParamKeyValue[]">
            <key>CODE</key>
            <value>CUSTOMERID</value>
            <key>NTSCOD</key>
            <value>NOTECODE</value>
            <key>NTGTYP</key>
            <value>2</value>
         </objectKeys>
      </wss:read>
   </soapenv:Body>
</soapenv:Envelope>