Based on the data request sent to the back-end, you need to retrieve the data as a response to the device.
public void onSuccess(ISDMRequest aRequest, IHttpResponse aResponse) { String serviceDocument = new String(aResponse.getContent()); int resCode = aResponse.getStatusCode(); UiApplication.getUiApplication().invokeLater(new Runnable() { public void run() { Dialog.inform("success"+ resCode); Dialog.inform("Content"+ serviceDocument); } }); }