diff --git a/src/Gui/Dialogs/DlgAddPropertyVarSet.cpp b/src/Gui/Dialogs/DlgAddPropertyVarSet.cpp
index 94011897c6..3ef09b990d 100644
--- a/src/Gui/Dialogs/DlgAddPropertyVarSet.cpp
+++ b/src/Gui/Dialogs/DlgAddPropertyVarSet.cpp
@@ -371,8 +371,7 @@ bool DlgAddPropertyVarSet::isGroupValid()
 bool DlgAddPropertyVarSet::isTypeValid()
 {
     std::string type = ui->comboBoxType->currentText().toStdString();
-
-    return !Base::Type::fromName(type.c_str()).isBad();
+    return Base::Type::fromName(type.c_str()).isDerivedFrom(App::Property::getClassTypeId());
 }
 
 bool DlgAddPropertyVarSet::areFieldsValid()
@@ -380,9 +379,41 @@ bool DlgAddPropertyVarSet::areFieldsValid()
     return isNameValid() && isGroupValid() && isTypeValid();
 }
 
-void DlgAddPropertyVarSet::onTextFieldChanged([[maybe_unused]] const QString& text)
+void DlgAddPropertyVarSet::onTextFieldChanged([[maybe_unused]]const QString& text)
 {
     setOkEnabled(areFieldsValid());
+    showStatusMessage();
+}
+
+void DlgAddPropertyVarSet::showStatusMessage()
+{
+    QString error;
+    QString text = ui->lineEditName->text();
+    std::string name = text.toStdString();
+
+    if (!isGroupValid()) {
+        error = tr("Invalid group name");
+    }
+    else if (!isTypeValid()) {
+        error = tr("Invalid type name");
+    }
+    else if (name.empty()) {
+        error.clear();
+    }
+    else if (name != Base::Tools::getIdentifier(name)) {
+        error = tr("Invalid property name '%1'").arg(text);
+    }
+    else if (propertyExists(name)) {
+        error = tr("Property '%1' already exists").arg(text);
+    }
+    else if (App::ExpressionParser::isTokenAConstant(name)) {
+        error = tr("'%1' is a constant").arg(text);
+    }
+    else if (App::ExpressionParser::isTokenAUnit(name)) {
+        error = tr("'%1' is a unit").arg(text);
+    }
+
+    ui->labelError->setText(error);
 }
 
 void DlgAddPropertyVarSet::removeEditor()
@@ -409,6 +440,7 @@ void DlgAddPropertyVarSet::onTypeChanged(const QString& text)
     }
 
     setOkEnabled(areFieldsValid());
+    showStatusMessage();
 }
 
 void DlgAddPropertyVarSet::changeEvent(QEvent* e)
diff --git a/src/Gui/Dialogs/DlgAddPropertyVarSet.h b/src/Gui/Dialogs/DlgAddPropertyVarSet.h
index d0b539ae24..8e19901f3b 100644
--- a/src/Gui/Dialogs/DlgAddPropertyVarSet.h
+++ b/src/Gui/Dialogs/DlgAddPropertyVarSet.h
@@ -121,6 +121,7 @@ private:
     bool areFieldsValid();
 
     void onTextFieldChanged(const QString& text);
+    void showStatusMessage();
 
     void removeEditor();
     void onTypeChanged(const QString& text);
diff --git a/src/Gui/Dialogs/DlgAddPropertyVarSet.ui b/src/Gui/Dialogs/DlgAddPropertyVarSet.ui
index d46bc7ba31..651c8fc452 100644
--- a/src/Gui/Dialogs/DlgAddPropertyVarSet.ui
+++ b/src/Gui/Dialogs/DlgAddPropertyVarSet.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>418</width>
-    <height>223</height>
+    <height>234</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -70,6 +70,13 @@
     <widget class="QLineEdit" name="lineEditToolTip"/>
    </item>
    <item row="6" column="0" colspan="2">
+    <widget class="QLabel" name="labelError">
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
+   <item row="7" column="0" colspan="2">
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>