Description of problem: Attempt to add alert notification on the alert defined for group/dynagroup or in alert definition template fails with the message "Failure in datasource while processing FETCH request" in the Message Center. At the same time, no error is logged in the server.log file in DEBUG mode. Version-Release number of selected component (if applicable): RHQ 4.12 How reproducible: Always Steps to Reproduce: 1. Install and start RHQ 4.12 2. Create a group or dynagroup; 3. Create new alert, add a condition and try to add notification; Actual results: An error message is shown in the top right corner "Failure in datasource while processing FETCH request" and the full message in the Message Center is: ******************************* Message : Failure in datasource while processing FETCH request. Severity : Error Time : Monday, April 24, 2017 2:43:58 PM UTC+1 Root Cause : (TypeError) : Cannot read property 'alertDefinitions' of null Detail : com.google.gwt.core.client.JavaScriptException:(TypeError) : Cannot read property 'alertDefinitions' of null --- STACK TRACE FOLLOWS --- (TypeError) : Cannot read property 'alertDefinitions' of null at Unknown.$getAlertDefinitions(<anonymous>@19) at Unknown.$prepareNotificationsForPreview(<anonymous>@5) at Unknown.$executeFetch_14(<anonymous>@12) at Unknown.executeFetch_19(<anonymous>@3) at Unknown.transformRequest_0(<anonymous>@14) at Unknown.<anonymous>(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/F1161466392381594EBFA19C65D6BFBD.cache.html@21) at Unknown.apply(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/F1161466392381594EBFA19C65D6BFBD.cache.html@21) at Unknown.entry0(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/F1161466392381594EBFA19C65D6BFBD.cache.html@16) at Unknown.transformRequest(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/F1161466392381594EBFA19C65D6BFBD.cache.html@14) at Unknown.isc_DataSource_getServiceInputs(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_DataBinding.js@13) at Unknown.isc_DataSource_sendDSRequest(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_DataBinding.js@13) at Unknown.isc_DataSource_performDSOperation(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_DataBinding.js@13) at Unknown.isc_DataSource_fetchData(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_DataBinding.js@67) at Unknown.isc_ResultSet_fetchRemoteData(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_DataBinding.js@68) at Unknown.isc_ResultSet__fetchRemoteData(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_DataBinding.js@270) at Unknown.isc_c_Class_fireCallback(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_Core.js@49) at Unknown.isc_c_Class__fireActionsOnPause(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_Core.js@198) at Unknown.isc_c_Class_fireCallback(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_Core.js@78) at Unknown.isc_c_Timer__fireTimeout(http://biljana.usersys.redhat.com:7080/coregui/org.rhq.coregui.CoreGUI/sc/modules/ISC_Core.js@81) at Unknown.anonymous(<anonymous>@11) ******************************* The notification is not added. Expected results: No error is thrown and notification is properly created/added. Additional info: