List Editing for choice field does not work and showing an error "Cannot read property 'getElementsByTagName' of null " in browser console.Issue <!-- 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; } --> List Editing does not work for a choice field and choice will not load showing a blue spinning circle in the cell. We can successfully edit the field in the form but it breaks while editing the list. Error in the developer tools: Uncaught TypeError: Cannot read property 'getElementsByTagName' of null at e._createOptions (js_includes_list_edit_doctype.jsx:1741) at e._responseReceived (js_includes_doctype.jsx?v=11-02-2018_1054&lp=Mon_Oct_15_14_04_21_PDT_2018&c=26_493:12084) at e._processReqChange (js_includes_doctype.jsx?v=11-02-2018_1054&lp=Mon_Oct_15_14_04_21_PDT_2018&c=26_493:11942) Error in Node logs: Default-thread-16 A97702F5DB87E700F3AFF3D31D961976 txid=635f46b1db4b SEVERE *** ERROR *** java.lang.NullPointerException java.lang.NullPointerException at com.glide.choice.XMLChoiceListSerializer.getChoiceList(XMLChoiceListSerializer.java:43) at com.glide.processors.xmlhttp.XMLListChoiceListSeralizer.intersectedChoiceList(XMLListChoiceListSeralizer.java:60) at com.glide.processors.xmlhttp.XMLListChoiceListSeralizer.getChoiceList(XMLListChoiceListSeralizer.java:44) at com.glide.processors.xmlhttp.PickList.process(PickList.java:71) at com.glide.processors.XMLHttpProcessor.processJavaAJAX(XMLHttpProcessor.java:151) at com.glide.processors.XMLHttpProcessor.process(XMLHttpProcessor.java:104) at com.glide.processors.AProcessor.runProcessor(AProcessor.java:483) at com.glide.processors.AProcessor.processTransaction(AProcessor.java:205) at com.glide.processors.ProcessorRegistry.process0(ProcessorRegistry.java:178) at com.glide.processors.ProcessorRegistry.process(ProcessorRegistry.java:167) at com.glide.ui.GlideServletTransaction.process(GlideServletTransaction.java:31) at com.glide.sys.Transaction.run(Transaction.java:2038) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) <!-- p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545} --> <!-- p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545} --> <!-- p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545} --> <!-- p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545; min-height: 14.0px} -->ReleaseAllCause The value of the sys_class_name is null for the record which is unable to edit in the list. You can verify it by adding class field to the list and notice the value is null. <!-- p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545} -->ResolutionAdding the value to the Class(sys_class_name) to the record will resolve the issue.