diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js b/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js
index 9aa27c710..752c24eff 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/common/typedInput.js
@@ -166,68 +166,74 @@
         { value: "_session", source: ["websocket out","tcp out"] },
     ]
     var allOptions = {
-        msg: {value:"msg",label:"msg.",validate:RED.utils.validatePropertyExpression, autoComplete: autoComplete(msgCompletions)},
-        flow: {value:"flow",label:"flow.",hasValue:true,
-            options:[],
-            validate:RED.utils.validatePropertyExpression,
+        msg: { value: "msg", label: "msg.", validate: RED.utils.validatePropertyExpression, autoComplete: autoComplete(msgCompletions) },
+        flow: {
+            value: "flow", label: "flow.", hasValue: true,
+            options: [],
+            validate: RED.utils.validatePropertyExpression,
             parse: contextParse,
             export: contextExport,
             valueLabel: contextLabel
         },
-        global: {value:"global",label:"global.",hasValue:true,
-            options:[],
-            validate:RED.utils.validatePropertyExpression,
+        global: {
+            value: "global", label: "global.", hasValue: true,
+            options: [],
+            validate: RED.utils.validatePropertyExpression,
             parse: contextParse,
             export: contextExport,
             valueLabel: contextLabel
         },
-        str: {value:"str",label:"string",icon:"red/images/typedInput/az.svg"},
-        num: {value:"num",label:"number",icon:"red/images/typedInput/09.svg",validate: function(v) {
-            return (true === RED.utils.validateTypedProperty(v, "num"));
+        str: { value: "str", label: "string", icon: "red/images/typedInput/az.svg" },
+        num: { value: "num", label: "number", icon: "red/images/typedInput/09.svg", validate: function (v, o) {
+            return RED.utils.validateTypedProperty(v, "num", o);
         } },
-        bool: {value:"bool",label:"boolean",icon:"red/images/typedInput/bool.svg",options:["true","false"]},
+        bool: { value: "bool", label: "boolean", icon: "red/images/typedInput/bool.svg", options: ["true", "false"] },
         json: {
-            value:"json",
-            label:"JSON",
-            icon:"red/images/typedInput/json.svg",
-            validate: function(v) { try{JSON.parse(v);return true;}catch(e){return false;}},
-            expand: function() {
+            value: "json",
+            label: "JSON",
+            icon: "red/images/typedInput/json.svg",
+            validate: function (v, o) {
+                return RED.utils.validateTypedProperty(v, "json", o);
+            },
+            expand: function () {
                 var that = this;
                 var value = this.value();
                 try {
-                    value = JSON.stringify(JSON.parse(value),null,4);
-                } catch(err) {
+                    value = JSON.stringify(JSON.parse(value), null, 4);
+                } catch (err) {
                 }
                 RED.editor.editJSON({
                     value: value,
                     stateId: RED.editor.generateViewStateId("typedInput", that, "json"),
                     focus: true,
-                    complete: function(v) {
+                    complete: function (v) {
                         var value = v;
                         try {
                             value = JSON.stringify(JSON.parse(v));
-                        } catch(err) {
+                        } catch (err) {
                         }
                         that.value(value);
                     }
                 })
             }
         },
-        re: {value:"re",label:"regular expression",icon:"red/images/typedInput/re.svg"},
-        date: {value:"date",label:"timestamp",icon:"fa fa-clock-o",hasValue:false},
+        re: { value: "re", label: "regular expression", icon: "red/images/typedInput/re.svg" },
+        date: { value: "date", label: "timestamp", icon: "fa fa-clock-o", hasValue: false },
         jsonata: {
             value: "jsonata",
             label: "expression",
             icon: "red/images/typedInput/expr.svg",
-            validate: function(v) { try{jsonata(v);return true;}catch(e){return false;}},
-            expand:function() {
+            validate: function (v, o) {
+                return RED.utils.validateTypedProperty(v, "jsonata", o);
+            },
+            expand: function () {
                 var that = this;
                 RED.editor.editExpression({
-                    value: this.value().replace(/\t/g,"\n"),
+                    value: this.value().replace(/\t/g, "\n"),
                     stateId: RED.editor.generateViewStateId("typedInput", that, "jsonata"),
                     focus: true,
-                    complete: function(v) {
-                        that.value(v.replace(/\n/g,"\t"));
+                    complete: function (v) {
+                        that.value(v.replace(/\n/g, "\t"));
                     }
                 })
             }
@@ -236,13 +242,13 @@
             value: "bin",
             label: "buffer",
             icon: "red/images/typedInput/bin.svg",
-            expand: function() {
+            expand: function () {
                 var that = this;
                 RED.editor.editBuffer({
                     value: this.value(),
                     stateId: RED.editor.generateViewStateId("typedInput", that, "bin"),
                     focus: true,
-                    complete: function(v) {
+                    complete: function (v) {
                         that.value(v);
                     }
                 })
@@ -257,9 +263,9 @@
             value: "node",
             label: "node",
             icon: "red/images/typedInput/target.svg",
-            valueLabel: function(container,value) {
+            valueLabel: function (container, value) {
                 var node = RED.nodes.node(value);
-                var nodeDiv = $('<div>',{class:"red-ui-search-result-node"}).css({
+                var nodeDiv = $('<div>', { class: "red-ui-search-result-node" }).css({
                     "margin-top": "2px",
                     "margin-left": "3px"
                 }).appendTo(container);
@@ -268,117 +274,117 @@
                     "margin-left": "6px"
                 }).appendTo(container);
                 if (node) {
-                    var colour = RED.utils.getNodeColor(node.type,node._def);
-                    var icon_url = RED.utils.getNodeIcon(node._def,node);
+                    var colour = RED.utils.getNodeColor(node.type, node._def);
+                    var icon_url = RED.utils.getNodeIcon(node._def, node);
                     if (node.type === 'tab') {
                         colour = "#C0DEED";
                     }
-                    nodeDiv.css('backgroundColor',colour);
-                    var iconContainer = $('<div/>',{class:"red-ui-palette-icon-container"}).appendTo(nodeDiv);
+                    nodeDiv.css('backgroundColor', colour);
+                    var iconContainer = $('<div/>', { class: "red-ui-palette-icon-container" }).appendTo(nodeDiv);
                     RED.utils.createIconElement(icon_url, iconContainer, true);
-                    var l = RED.utils.getNodeLabel(node,node.id);
+                    var l = RED.utils.getNodeLabel(node, node.id);
                     nodeLabel.text(l);
                 } else {
                     nodeDiv.css({
                         'backgroundColor': '#eee',
-                        'border-style' : 'dashed'
+                        'border-style': 'dashed'
                     });
 
                 }
             },
-            expand: function() {
+            expand: function () {
                 var that = this;
                 RED.tray.hide();
                 RED.view.selectNodes({
                     single: true,
                     selected: [that.value()],
-                    onselect: function(selection) {
+                    onselect: function (selection) {
                         that.value(selection.id);
                         RED.tray.show();
                     },
-                    oncancel: function() {
+                    oncancel: function () {
                         RED.tray.show();
                     }
                 })
             }
         },
-        cred:{
-            value:"cred",
-            label:"credential",
-            icon:"fa fa-lock",
+        cred: {
+            value: "cred",
+            label: "credential",
+            icon: "fa fa-lock",
             inputType: "password",
-            valueLabel: function(container,value) {
+            valueLabel: function (container, value) {
                 var that = this;
-                container.css("pointer-events","none");
-                container.css("flex-grow",0);
+                container.css("pointer-events", "none");
+                container.css("flex-grow", 0);
                 this.elementDiv.hide();
                 var buttons = $('<div>').css({
                     position: "absolute",
-                    right:"6px",
+                    right: "6px",
                     top: "6px",
-                    "pointer-events":"all"
+                    "pointer-events": "all"
                 }).appendTo(container);
                 var eyeButton = $('<button type="button" class="red-ui-button red-ui-button-small"></button>').css({
-                    width:"20px"
-                }).appendTo(buttons).on("click", function(evt) {
+                    width: "20px"
+                }).appendTo(buttons).on("click", function (evt) {
                     evt.preventDefault();
                     var cursorPosition = that.input[0].selectionStart;
                     var currentType = that.input.attr("type");
                     if (currentType === "text") {
-                        that.input.attr("type","password");
+                        that.input.attr("type", "password");
                         eyeCon.removeClass("fa-eye-slash").addClass("fa-eye");
-                        setTimeout(function() {
+                        setTimeout(function () {
                             that.input.focus();
                             that.input[0].setSelectionRange(cursorPosition, cursorPosition);
-                        },50);
+                        }, 50);
                     } else {
-                        that.input.attr("type","text");
+                        that.input.attr("type", "text");
                         eyeCon.removeClass("fa-eye").addClass("fa-eye-slash");
-                        setTimeout(function() {
+                        setTimeout(function () {
                             that.input.focus();
                             that.input[0].setSelectionRange(cursorPosition, cursorPosition);
-                        },50);
+                        }, 50);
                     }
                 }).hide();
-                var eyeCon = $('<i class="fa fa-eye"></i>').css("margin-left","-2px").appendTo(eyeButton);
+                var eyeCon = $('<i class="fa fa-eye"></i>').css("margin-left", "-2px").appendTo(eyeButton);
 
                 if (value === "__PWRD__") {
                     var innerContainer = $('<div><i class="fa fa-asterisk"></i><i class="fa fa-asterisk"></i><i class="fa fa-asterisk"></i><i class="fa fa-asterisk"></i><i class="fa fa-asterisk"></i></div>').css({
-                        padding:"6px 6px",
-                        borderRadius:"4px"
+                        padding: "6px 6px",
+                        borderRadius: "4px"
                     }).addClass("red-ui-typedInput-value-label-inactive").appendTo(container);
-                    var editButton = $('<button type="button" class="red-ui-button red-ui-button-small"><i class="fa fa-pencil"></i></button>').appendTo(buttons).on("click", function(evt) {
+                    var editButton = $('<button type="button" class="red-ui-button red-ui-button-small"><i class="fa fa-pencil"></i></button>').appendTo(buttons).on("click", function (evt) {
                         evt.preventDefault();
                         innerContainer.hide();
-                        container.css("background","none");
-                        container.css("pointer-events","none");
+                        container.css("background", "none");
+                        container.css("pointer-events", "none");
                         that.input.val("");
                         that.element.val("");
                         that.elementDiv.show();
                         editButton.hide();
                         cancelButton.show();
                         eyeButton.show();
-                        setTimeout(function() {
+                        setTimeout(function () {
                             that.input.focus();
-                        },50);
+                        }, 50);
                     });
-                    var cancelButton = $('<button type="button" class="red-ui-button red-ui-button-small"><i class="fa fa-times"></i></button>').css("margin-left","3px").appendTo(buttons).on("click", function(evt) {
+                    var cancelButton = $('<button type="button" class="red-ui-button red-ui-button-small"><i class="fa fa-times"></i></button>').css("margin-left", "3px").appendTo(buttons).on("click", function (evt) {
                         evt.preventDefault();
                         innerContainer.show();
-                        container.css("background","");
+                        container.css("background", "");
                         that.input.val("__PWRD__");
                         that.element.val("__PWRD__");
                         that.elementDiv.hide();
                         editButton.show();
                         cancelButton.hide();
                         eyeButton.hide();
-                        that.input.attr("type","password");
+                        that.input.attr("type", "password");
                         eyeCon.removeClass("fa-eye-slash").addClass("fa-eye");
 
                     }).hide();
                 } else {
-                    container.css("background","none");
-                    container.css("pointer-events","none");
+                    container.css("background", "none");
+                    container.css("pointer-events", "none");
                     this.elementDiv.show();
                     eyeButton.show();
                 }
@@ -1234,25 +1240,41 @@
             }
         },
         validate: function() {
-            var result;
-            var value = this.value();
-            var type = this.type();
+            let valid = true;
+            const value = this.value();
+            const type = this.type();
             if (this.typeMap[type] && this.typeMap[type].validate) {
-                var val = this.typeMap[type].validate;
-                if (typeof val === 'function') {
-                    result = val(value);
+                const validate = this.typeMap[type].validate;
+                if (typeof validate === 'function') {
+                    valid = validate(value, {});
                 } else {
-                    result = val.test(value);
+                    // Regex
+                    valid = validate.test(value);
+                    if (!valid) {
+                        valid = RED._("validator.errors.invalid-regexp");
+                    }
+                }
+            }
+            if ((typeof valid === "string") || !valid) {
+                this.uiSelect.addClass("input-error");
+                if (typeof valid === "string") {
+                    let tooltip = this.element.data("tooltip");
+                    if (tooltip) {
+                        tooltip.setContent(valid);
+                    } else {
+                        tooltip = RED.popover.tooltip(this.elementDiv, valid);
+                        this.element.data("tooltip", tooltip);
+                    }
                 }
             } else {
-                result = true;
+                this.uiSelect.removeClass("input-error");
+                const tooltip = this.element.data("tooltip");
+                if (tooltip) {
+                    this.element.data("tooltip", null);
+                    tooltip.delete();
+                }
             }
-            if (result) {
-                this.uiSelect.removeClass('input-error');
-            } else {
-                this.uiSelect.addClass('input-error');
-            }
-            return result;
+            return !!valid;
         },
         show: function() {
             this.uiSelect.show();
diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js b/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js
index 6475b19f5..1677dea04 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/utils.js
@@ -888,11 +888,25 @@ RED.utils = (function() {
         return parts;
     }
 
-    function validatePropertyExpression(str) {
+    /**
+     * Validate a property expression
+     * @param {*} str - the property value
+     * @returns {boolean|string} whether the node proprty is valid. `true`: valid `false|String`: invalid
+     */
+    function validatePropertyExpression(str, opt) {
         try {
-            var parts = normalisePropertyExpression(str);
+            const parts = normalisePropertyExpression(str);
             return true;
         } catch(err) {
+            // If the validator has opt, it is a 3.x validator that
+            // can return a String to mean 'invalid' and provide a reason
+            if (opt) {
+                if (opt.label) {
+                    return opt.label + ': ' + err.message;
+                }
+                return err.message;
+            }
+            // Otherwise, a 2.x returns a false value
             return false;
         }
     }
@@ -906,23 +920,24 @@ RED.utils = (function() {
      * @returns true if valid, String if invalid
      */
     function validateTypedProperty(propertyValue, propertyType, opt) {
-
-        let error
+        let error;
         if (propertyType === 'json') {
             try {
                 JSON.parse(propertyValue);
             } catch(err) {
                 error = RED._("validator.errors.invalid-json", {
                     error: err.message
-                })
+                });
             }
         } else if (propertyType === 'msg' || propertyType === 'flow' || propertyType === 'global' ) {
-            if (!RED.utils.validatePropertyExpression(propertyValue)) {
-                error = RED._("validator.errors.invalid-prop")
+            // To avoid double label
+            const valid = RED.utils.validatePropertyExpression(propertyValue, opt ? {} : undefined);
+            if (valid !== true) {
+                error = opt ? valid : RED._("validator.errors.invalid-prop");
             }
         } else if (propertyType === 'num') {
             if (!/^NaN$|^[+-]?[0-9]*\.?[0-9]*([eE][-+]?[0-9]+)?$|^[+-]?(0b|0B)[01]+$|^[+-]?(0o|0O)[0-7]+$|^[+-]?(0x|0X)[0-9a-fA-F]+$/.test(propertyValue)) {
-                error = RED._("validator.errors.invalid-num")
+                error = RED._("validator.errors.invalid-num");
             }
         } else if (propertyType === 'jsonata') {
             try { 
@@ -930,16 +945,16 @@ RED.utils = (function() {
             } catch(err) {
                 error = RED._("validator.errors.invalid-expr", {
                     error: err.message
-                })
+                });
             }
         }
         if (error) {
             if (opt && opt.label) {
-                return opt.label+': '+error
+                return opt.label + ': ' + error;
             }
-            return error
+            return error;
         }
-        return true
+        return true;
     }
 
     function getMessageProperty(msg,expr) {