Catalog client scripts are not executing in UI11 and throwing "$j is not defined" errorIssue <!-- div.margin{ padding: 10px 40px 40px 30px; } table.tocTable{ border: 1px solid; border-color:#E0E0E0; background-color: rgb(245, 245, 245); padding-top: .6em; padding-bottom: .6em; padding-left: .9em; padding-right: .6em; } table.noteTable{ border:1px solid; border-color:#E0E0E0; background-color: rgb(245, 245, 245); width: 100%; border-spacing:2; } table.internaltable { white-space:nowrap; text-align:left; border-width: 1px; border-collapse: collapse; font-size:14px; width: 85%; } table.internaltable th { border-width: 1px; padding: 5px; border-style: solid; border-color: rgb(245, 245, 245); background-color: rgb(245, 245, 245); } table.internaltable td { border-width: 1px; padding: 5px; border-style: solid; border-color: #E0E0E0; color: #000000; } .title { color: #D1232B; font-weight:normal; font-size:28px; } h1{ color: #D1232B; font-weight:normal; font-size:21px; margin-bottom:-5px } h2{ color: #646464; font-weight:bold; font-size:18px; } h3{ color: #000000; font-weight:BOLD; font-size:16px; text-decoration:underline; } h4{ color: #646464; font-weight:BOLD; font-size:15px; text-decoration:; } h5{ color: #000000; font-weight:BOLD; font-size:13px; text-decoration:; } h6{ color: #000000; font-weight:BOLD; font-size:14px; text-decoration:; } ul{ list-style: disc outside none; margin-left: 0; } li { padding-left: 1em; } --> Symptoms On UI11 service catalog form, the catalog client scripts doesn't get executed.While loading the service catalog form, looking at the browser console log reveals below errors, Uncaught ReferenceError: $j is not defined at klass.getMetricStats [as callbackFunction] (com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=3f1dd0320a0a0b99000a53f7604a2ef9&sysparm_stack=home.do:1309) at klass._responseReceived (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19887) at klass._processReqChange (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19745) getMetricStats @ com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=3f1dd0320a0a0b99000a53f7604a2ef9&sysparm_stack=home.do:1309 _responseReceived @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19887 _processReqChange @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19745 XMLHttpRequest.send (async) _sendRequest @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19734 _makeRequest @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19706 (anonymous) @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19682 setTimeout (async) _getXML0 @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19682 getXML @ js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:19671 (anonymous) @ com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=3f1dd0320a0a0b99000a53f7604a2ef9&sysparm_stack=home.do:1298 Uncaught ReferenceError: $j is not defined at Object.send (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:36339) at klass._clientTransaction (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:36577) at klass.fireEvent (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:7797) at klass.fire (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:7822) at firePageTimer (com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=3f1dd0320a0a0b99000a53f7604a2ef9&sysparm_stack=home.do:1550) at setTimeGraph (com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=3f1dd0320a0a0b99000a53f7604a2ef9&sysparm_stack=home.do:1523) at com.glideapp.servicecatalog_cat_item_view.do?sysparm_id=3f1dd0320a0a0b99000a53f7604a2ef9&sysparm_stack=home.do:1515 at runAfterPageLoadedEvents (js_includes.jsx?v=04-19-2018_1049&lp=Wed_Jun_06_17_44_58_PDT_2018&c=6_61:7152) Release Istanbul, Jakarta, Kingston Cause With Istanbul release onwards, UI11 is not working as expected since it is deprecated as per document, hence system throws "$j is not defined error" on console and catalog client scripts are not executed. Resolution Activate UI16 plugin and set the property "glide.ui.doctype" to "true", so that instance will be pushed to use the latest User Interface and libraries. Additional Information Legacy - UI11 UI16