How to delete a service operation if this error is encountered: "Unable to delete. References found in runtime tables." ?

Run these three SQLs to see if you've any data for the service operation which you want to delete. 

SELECT * FROM PSAPMSGSUBCON WHERE IB_OPERATIONNAME = 'service operation'

SELECT * FROM PSIBLOGHDR WHERE IB_OPERATIONNAME = 'service operation'

SELECT * FROM PSAPMSGPUBHDR WHERE IB_OPERATIONNAME = 'service operation'

If you do, then delete the data and you will be able to successfully delete the service operation..

SoapDoc for peoplecode

Sample XML:

<?xml version="1.0"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:inf="http://www.ABC.com/" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
  <SOAP-ENV:Header/>
  <SOAP-ENV:Body>
    <inf:Method>
       <inf:Request>
           <Element1>123456</Element1>
           <Element2>test2</Element2>
       </inf:Request>
    </inf:Method/>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

PeopleCode using application package:

import PS_PT:Integration:IRequestHandler;

class TEST_IB implements PS_PT:Integration:IRequestHandler
   method TEST_IB ();
   method OnRequest(&_MSG As Message) Returns Message;
   method OnError(&_MSG As Message) Returns string;
end-class;

/* constructor */
method TEST_IB
   %Super = create PS_PT:Integration:IRequestHandler();
end-method;

method OnRequest
   /+ &_MSG as Message +/
   /+ Returns Message +/
   /+ Extends/implements PS_PT:Integration:IRequestHandler.OnRequest +/
 
   Local SOAPDoc &SOAPDoc;
   Local XmlDoc &lxmlDoc, &responseXMLDoc;
   Local XmlNode &EnvNode, &xmln, &Element1, &Element2;
   Local Message &lmsgGoRequest, &lmsgGoResponse, &Response;
   Local string &string;
 
   Local string &DefNameSpace = "http://www.ABC.com/";
 
   /*Create Soap Document*/
   &SOAPDoc = CreateSOAPDoc(); /* required */
 
   &SOAPDoc.AddEnvelope(%SOAP_Schema); /* Pick Scheme from the WSDL*/

   /*Add attributes to Schema*/
   &EnvNode = &SOAPDoc.EnvelopeNode;
   &EnvNode.AddAttribute("xmlns:soapenv", "http://schemas.xmlsoap.org/soap/envelope/");
   &EnvNode.AddAttribute("xmlns:inf", "http://www.ABC.com/");
 
   /*Add Soap Header*/
   &SOAPDoc.AddHeader();

   /*Add Soap Body*/
   &SOAPDoc.AddBody(); /* optional */

   /*Add first method inf:Method*/
   /*1 is for Request, 0 is for Response.*/
   &SOAPDoc.AddMethod("inf:Method", 1); /* required */

   /*Add Child Nodes*/
   &xmln = &SOAPDoc.MethodNode.AddElement("inf:Request");
   /*Add Elements - Element1, Element2*/
   &Element1= &xmln.AddElement("Element1");
   &Element1.NodeValue = "123456"; /*Hardcoded will use setup page to retreive data*/

   &Element2= &xmln.AddElement("Element2");
   &Element2.NodeValue = "test2"; /*Hardcoded will use setup page to retreive data*/

   rem &SOAPDoc.AddMethod("inf:Request", 1); /* required */
   rem &SOAPDoc.AddParm("Element1", "123456");
   rem &SOAPDoc.AddParm("Element2", "test2");
 
   &lxmlDoc = CreateXmlDoc(&SOAPDoc.GenXmlString());
 
   /* Validate the message */
   rem &OK = &SOAPDoc.ValidateSOAPDoc();
 
   /*Create message and Generate XML*/
   &lmsgGoRequest = CreateMessage(Operation.TEST_IB);
   &lmsgGoRequest.SetXmlDoc(&lxmlDoc);
 
   /* Send the Request */
   &Response = %IntBroker.SyncRequest(&lmsgGoRequest);
 
   &responseXMLDoc = &Response.GetXmlDoc();
 
   Return &Response;
 
end-method;

method OnError
   /+ &_MSG as Message +/
   /+ Returns String +/
   /+ Extends/implements PS_PT:Integration:IRequestHandler.OnError +/
 
   Return &_MSG.IBException.DefaultText;
end-method;