diff --git a/demo-shell/src/app/components/activiti/activiti.component.ts b/demo-shell/src/app/components/activiti/activiti.component.ts
index f1b4f26d87..a0ee23ca9e 100644
--- a/demo-shell/src/app/components/activiti/activiti.component.ts
+++ b/demo-shell/src/app/components/activiti/activiti.component.ts
@@ -179,7 +179,7 @@ export class ActivitiComponent implements AfterViewInit, OnDestroy, OnInit {
                 const row: DynamicTableRow = e.row;
                 if (row && row.value && row.value.name === 'admin') {
                     e.summary.isValid = false;
-                    e.summary.text = 'Sorry, wrong value. You cannot use "admin".';
+                    e.summary.message = 'Sorry, wrong value. You cannot use "admin".';
                     e.preventDefault();
                 }
             }
diff --git a/lib/core/form/components/widgets/dynamic-table/date-cell-validator-model.ts b/lib/core/form/components/widgets/dynamic-table/date-cell-validator-model.ts
index 9a73abd880..552efcdae7 100644
--- a/lib/core/form/components/widgets/dynamic-table/date-cell-validator-model.ts
+++ b/lib/core/form/components/widgets/dynamic-table/date-cell-validator-model.ts
@@ -41,7 +41,7 @@ export class DateCellValidator implements CellValidator {
             if (!dateValue.isValid()) {
                 if (summary) {
                     summary.isValid = false;
-                    summary.text = `Invalid '${column.name}' format.`;
+                    summary.message = `Invalid '${column.name}' format.`;
                 }
                 return false;
             }
diff --git a/lib/core/form/components/widgets/dynamic-table/dynamic-row-validation-summary.model.ts b/lib/core/form/components/widgets/dynamic-table/dynamic-row-validation-summary.model.ts
index 24cfb7980a..027de5f935 100644
--- a/lib/core/form/components/widgets/dynamic-table/dynamic-row-validation-summary.model.ts
+++ b/lib/core/form/components/widgets/dynamic-table/dynamic-row-validation-summary.model.ts
@@ -17,9 +17,14 @@
 
 /* tslint:disable:component-selector  */
 
-export interface DynamicRowValidationSummary {
+import { ErrorMessageModel } from '../core/index';
+
+export class DynamicRowValidationSummary extends ErrorMessageModel {
 
     isValid: boolean;
-    text: string;
 
+    constructor(json?: any) {
+        super(json);
+        this.isValid = json.isValid;
+    }
 }
diff --git a/lib/core/form/components/widgets/dynamic-table/dynamic-table.widget.model.ts b/lib/core/form/components/widgets/dynamic-table/dynamic-table.widget.model.ts
index a508b4bd6c..b4770732bb 100644
--- a/lib/core/form/components/widgets/dynamic-table/dynamic-table.widget.model.ts
+++ b/lib/core/form/components/widgets/dynamic-table/dynamic-table.widget.model.ts
@@ -145,10 +145,10 @@ export class DynamicTableModel extends FormWidgetModel {
     }
 
     validateRow(row: DynamicTableRow): DynamicRowValidationSummary {
-        const summary = <DynamicRowValidationSummary> {
+        const summary = new DynamicRowValidationSummary( {
             isValid: true,
-            text: null
-        };
+            message: null
+        });
 
         const event = new ValidateDynamicTableRowEvent(this.form, this.field, row, summary);
         this.formService.validateDynamicTableRow.next(event);
diff --git a/lib/core/form/components/widgets/dynamic-table/editors/row.editor.html b/lib/core/form/components/widgets/dynamic-table/editors/row.editor.html
index d26a343ada..cc4b07d634 100644
--- a/lib/core/form/components/widgets/dynamic-table/editors/row.editor.html
+++ b/lib/core/form/components/widgets/dynamic-table/editors/row.editor.html
@@ -33,7 +33,7 @@
             </div>
         </div>
     </div>
-    <error-widget [error]="validationSummary.text"></error-widget>
+    <error-widget [error]="validationSummary"></error-widget>
     <div>
         <button mat-button (click)="onCancelChanges()">Cancel</button>
         <button mat-button (click)="onSaveChanges()">Save</button>
diff --git a/lib/core/form/components/widgets/dynamic-table/editors/row.editor.spec.ts b/lib/core/form/components/widgets/dynamic-table/editors/row.editor.spec.ts
index 2b32f57905..9c99822df5 100644
--- a/lib/core/form/components/widgets/dynamic-table/editors/row.editor.spec.ts
+++ b/lib/core/form/components/widgets/dynamic-table/editors/row.editor.spec.ts
@@ -37,7 +37,7 @@ describe('RowEditorComponent', () => {
 
     it('should be valid upon init', () => {
         expect(component.validationSummary.isValid).toBeTruthy();
-        expect(component.validationSummary.text).toBeNull();
+        expect(component.validationSummary.message).toBe('');
     });
 
     it('should emit [cancel] event', (done) => {
@@ -58,7 +58,7 @@ describe('RowEditorComponent', () => {
 
     it('should emit [save] event', (done) => {
         spyOn(component.table, 'validateRow').and.returnValue(
-            <DynamicRowValidationSummary> {isValid: true, text: null}
+            <DynamicRowValidationSummary> {isValid: true, message: null}
         );
         component.save.subscribe(e => {
             expect(e.table).toBe(component.table);
@@ -71,7 +71,7 @@ describe('RowEditorComponent', () => {
 
     it('should not emit [save] event for invalid row', () => {
         spyOn(component.table, 'validateRow').and.returnValue(
-            <DynamicRowValidationSummary> {isValid: false, text: 'error'}
+            <DynamicRowValidationSummary> {isValid: false, message: 'error'}
         );
         let raised = false;
         component.save.subscribe(e => raised = true);
diff --git a/lib/core/form/components/widgets/dynamic-table/editors/row.editor.ts b/lib/core/form/components/widgets/dynamic-table/editors/row.editor.ts
index 5f9b476146..783aff7fda 100644
--- a/lib/core/form/components/widgets/dynamic-table/editors/row.editor.ts
+++ b/lib/core/form/components/widgets/dynamic-table/editors/row.editor.ts
@@ -45,7 +45,11 @@ export class RowEditorComponent {
     @Output()
     cancel: EventEmitter<any> = new EventEmitter<any>();
 
-    validationSummary: DynamicRowValidationSummary = <DynamicRowValidationSummary> { isValid: true, text: null };
+    validationSummary: DynamicRowValidationSummary;
+
+    constructor() {
+        this.validationSummary = new DynamicRowValidationSummary({ isValid: true, message: '' });
+    }
 
     onCancelChanges() {
         this.cancel.emit({
diff --git a/lib/core/form/components/widgets/dynamic-table/number-cell-validator.model.ts b/lib/core/form/components/widgets/dynamic-table/number-cell-validator.model.ts
index 680b7e5c3b..7b0b568d11 100644
--- a/lib/core/form/components/widgets/dynamic-table/number-cell-validator.model.ts
+++ b/lib/core/form/components/widgets/dynamic-table/number-cell-validator.model.ts
@@ -54,7 +54,7 @@ export class NumberCellValidator implements CellValidator {
 
             if (summary) {
                 summary.isValid = false;
-                summary.text = `Field '${column.name}' must be a number.`;
+                summary.message = `Field '${column.name}' must be a number.`;
             }
             return false;
         }
diff --git a/lib/core/form/components/widgets/dynamic-table/required-cell-validator.model.ts b/lib/core/form/components/widgets/dynamic-table/required-cell-validator.model.ts
index 99114b7789..9fd9f4c747 100644
--- a/lib/core/form/components/widgets/dynamic-table/required-cell-validator.model.ts
+++ b/lib/core/form/components/widgets/dynamic-table/required-cell-validator.model.ts
@@ -43,7 +43,7 @@ export class RequiredCellValidator implements CellValidator {
                 if (value === null || value === undefined || value === '') {
                     if (summary) {
                         summary.isValid = false;
-                        summary.text = `Field '${column.name}' is required.`;
+                        summary.message = `Field '${column.name}' is required.`;
                     }
                     return false;
                 }
diff --git a/lib/core/form/components/widgets/error/error.component.html b/lib/core/form/components/widgets/error/error.component.html
index c9b8e9490a..6a42f7b114 100644
--- a/lib/core/form/components/widgets/error/error.component.html
+++ b/lib/core/form/components/widgets/error/error.component.html
@@ -1,5 +1,5 @@
 <div class="adf-error-text-container">
-    <div *ngIf="error.isActive()" [@transitionMessages]="_subscriptAnimationState">
+    <div *ngIf="error?.isActive()" [@transitionMessages]="_subscriptAnimationState">
         <div class="adf-error-text">{{error.message | translate:translateParameters}}</div>
         <mat-icon class="adf-error-icon">warning</mat-icon>
     </div>
diff --git a/lib/core/form/components/widgets/error/error.component.ts b/lib/core/form/components/widgets/error/error.component.ts
index f6fa7fc3bf..5aa82df601 100644
--- a/lib/core/form/components/widgets/error/error.component.ts
+++ b/lib/core/form/components/widgets/error/error.component.ts
@@ -60,7 +60,7 @@ export class ErrorWidgetComponent extends WidgetComponent implements OnChanges {
             this.required = changes.required.currentValue;
             this._subscriptAnimationState = 'enter';
         }
-        if (changes['error']) {
+        if (changes['error'] && changes['error'].currentValue) {
             if (changes.error.currentValue.isActive()) {
                 this.error = changes.error.currentValue;
                 this.translateParameters = this.error.getAttributesAsJsonObj();