code: public static void sendExceptionToClient(Throwable throwable, String probeId,
                                               Conversation conversation, int requestNumber) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(tc, "sendExceptionToClient",
                          new Object[]
                          {
                           throwable,
                           probeId,
                           conversation,
                           requestNumber
                          });
  
          CommsByteBuffer buffer = poolManager.allocate();
          buffer.putException(throwable, probeId, conversation);
          // defect 99984 checking whether jmsServer feature is intact or its removed 
          if (CommsServerServiceFacade.getJsAdminService() != null)
          {
              try {
                  conversation.send(buffer,
                                    JFapChannelConstants.SEG_EXCEPTION,
                                    requestNumber,
                                    JFapChannelConstants.PRIORITY_MEDIUM,
                                    true,
                                    ThrottlingPolicy.BLOCK_THREAD,
                                    null);
              } catch (SIException c) {
                  FFDCFilter.processException(c, CLASS_NAME + ".sendExceptionToClient",
                                              CommsConstants.STATICCATHELPER_SEND_EXCEP_01);
  
                  SibTr.error(tc, "COMMUNICATION_ERROR_SICO2023", c);
              }
          }
          else
          {
              if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
                  SibTr.entry(tc, "conversation send is not being called as jmsadminService is null");
          }
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(tc, "sendExceptionToClient");
      }
docs: Sends an exception response back to the client.
  
  @param throwable The exception to send back
  @param probeId The probe ID of any corresponding FFDC record.
  @param conversation The conversaton to use.
  @param requestNumber The request number to reply with.