diff --git a/hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/components/HawkbitUIErrorHandler.java b/hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/components/HawkbitUIErrorHandler.java
index cdbd04034..f5f5185d6 100644
--- a/hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/components/HawkbitUIErrorHandler.java
+++ b/hawkbit-ui/src/main/java/org/eclipse/hawkbit/ui/components/HawkbitUIErrorHandler.java
@@ -11,6 +11,13 @@ package org.eclipse.hawkbit.ui.components;
 import static com.vaadin.ui.themes.ValoTheme.NOTIFICATION_CLOSABLE;
 import static com.vaadin.ui.themes.ValoTheme.NOTIFICATION_FAILURE;
 import static com.vaadin.ui.themes.ValoTheme.NOTIFICATION_SMALL;
+import static java.lang.System.lineSeparator;
+import static java.util.stream.Collectors.joining;
+
+import java.util.Set;
+
+import javax.validation.ConstraintViolation;
+import javax.validation.ConstraintViolationException;
 
 import org.eclipse.hawkbit.ui.utils.I18N;
 import org.eclipse.hawkbit.ui.utils.SpringContextHelper;
@@ -91,10 +98,29 @@ public class HawkbitUIErrorHandler extends DefaultErrorHandler {
      * @return a hawkbit error notification message
      */
     protected HawkbitErrorNotificationMessage buildNotification(final Throwable ex) {
+
         LOG.error("Error in UI: ", ex);
+
+        final String errorMessage = extractMessageFrom(ex);
+
         final I18N i18n = SpringContextHelper.getBean(I18N.class);
         return new HawkbitErrorNotificationMessage(STYLE, i18n.get("caption.error"),
-                i18n.get("message.error.temp", ex.getClass().getSimpleName()), false);
+                i18n.get("message.error.temp", errorMessage), false);
     }
 
+    private String extractMessageFrom(final Throwable ex) {
+
+        if (!(ex instanceof ConstraintViolation)) {
+            return ex.getClass().getSimpleName();
+        }
+
+        final Set<ConstraintViolation<?>> violations = ((ConstraintViolationException) ex).getConstraintViolations();
+
+        if (violations == null) {
+            return ex.getClass().getSimpleName();
+        }
+
+        return violations.stream().map(violation -> violation.getPropertyPath() + " " + violation.getMessage())
+                .collect(joining(lineSeparator()));
+    }
 }