diff --git a/code/multitab-validation/MultiTabPage.php b/code/multitab-validation/MultiTabPage.php
new file mode 100644
index 0000000..4037993
--- /dev/null
+++ b/code/multitab-validation/MultiTabPage.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace SilverStripe\FrameworkTest\Model;
+
+use SilverStripe\CMS\Model\SiteTree;
+use SilverStripe\Forms\RequiredFields;
+use SilverStripe\Forms\TextField;
+
+/**
+ * This class is specifically for the silverstripe/admin behat test multitab-validation.feature
+ */
+class MultiTabPage extends SiteTree
+{
+    private static $db = [
+        'SecondTabFirstField' => 'Varchar(50)',
+        'ThirdTabFirstField' => 'Varchar(50)',
+        'ThirdTabSecondField' => 'Varchar(50)',
+        'FourthTabFirstField' => 'Varchar(50)',
+        'SettingsTabFirstField' => 'Varchar(50)',
+    ];
+
+    public function getCMSFields()
+    {
+        $fields = parent::getCMSFields();
+        $fields->addFieldToTab("Root.Second", TextField::create("SecondTabFirstField"));
+        $fields->addFieldToTab("Root.Third", TextField::create("ThirdTabFirstField"));
+        $fields->addFieldToTab("Root.Third", TextField::create("ThirdTabSecondField"));
+        $fields->addFieldToTab("Root.Fourth", TextField::create("FourthTabFirstField"));
+        return $fields;
+    }
+
+    public function getSettingsFields()
+    {
+        $fields = parent::getSettingsFields();
+        $fields->addFieldToTab("Root.Settings", TextField::create('SettingsTabFirstField'));
+        return $fields;
+    }
+
+    public function getCMSValidator()
+    {
+        return new RequiredFields([
+            'ThirdTabFirstField',
+            'FourthTabFirstField',
+            // This is only validated if you are actually on the settings tab when clicking save
+            'SettingsTabFirstField'
+        ]);
+    }
+
+    public function validate()
+    {
+        $result = parent::validate();
+
+        // Validation error on specific form field that is not in RequiredFields
+        if ($this->SecondTabFirstField && $this->SecondTabFirstField !== '222') {
+            $result->addFieldError('SecondTabFirstField', 'Value of field must be 222');
+        }
+
+        // Manual testing only, uncomment this line to test
+        // $result->addError('This page cannot exist.');
+
+        return $result;
+    }
+}
diff --git a/code/multitab-validation/SingleTabPage.php b/code/multitab-validation/SingleTabPage.php
new file mode 100644
index 0000000..574f30f
--- /dev/null
+++ b/code/multitab-validation/SingleTabPage.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace SilverStripe\FrameworkTest\Model;
+
+use SilverStripe\CMS\Model\SiteTree;
+use SilverStripe\Forms\RequiredFields;
+
+/**
+ * This class is specifically for the silverstripe/admin behat test multitab-validation.feature
+ */
+class SingleTabPage extends SiteTree
+{
+    public function getCMSValidator()
+    {
+        return new RequiredFields([
+            'Content'
+        ]);
+    }
+}