diff --git a/code/CMSProfileController.php b/code/CMSProfileController.php
index eb34d8e5c..28e2664dd 100644
--- a/code/CMSProfileController.php
+++ b/code/CMSProfileController.php
@@ -21,7 +21,7 @@ class CMSProfileController extends LeftAndMain
     private static $required_permission_codes = 'CMS_ACCESS';
 
     /**
-     * @deprecated 5.4.0 Will be renamed to model_class
+     * @deprecated 2.4.0 Will be renamed to model_class
      */
     private static $tree_class = Member::class;
 
diff --git a/code/LeftAndMain.php b/code/LeftAndMain.php
index 64e28364c..ace3d656a 100644
--- a/code/LeftAndMain.php
+++ b/code/LeftAndMain.php
@@ -22,6 +22,7 @@
 use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Core\Manifest\ModuleResourceLoader;
 use SilverStripe\Core\Manifest\VersionProvider;
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Dev\TestOnly;
 use SilverStripe\Forms\DropdownField;
 use SilverStripe\Forms\FieldList;
@@ -128,7 +129,7 @@ class LeftAndMain extends Controller implements PermissionProvider
      *
      * @config
      * @var string
-     * @deprecated 5.4.0 Will be renamed to model_class
+     * @deprecated 2.4.0 Will be renamed to model_class
      */
     private static $tree_class = null;
 
@@ -485,8 +486,12 @@ public function jsonError($errorCode, $errorMessage = null)
         throw new HTTPResponse_Exception($response);
     }
 
+    /**
+     * @deprecated 2.4.0 Will be replaced with SilverStripe\Admin\FormSchemaController::schema()
+     */
     public function methodSchema(HTTPRequest $request): HTTPResponse
     {
+        Deprecation::noticeWithNoReplacment('2.4.0', 'Will be replaced with SilverStripe\Admin\FormSchemaController::schema()');
         $method = $request->param('Method');
         $formName = $request->param('FormName');
         $itemID = $request->param('ItemID');
@@ -1564,9 +1569,11 @@ public function EmptyForm()
      * Handler for all global modals
      *
      * @return ModalController
+     * @deprecated 2.4.0 Will be removed without equivalent functionality to replace it
      */
     public function Modals()
     {
+        Deprecation::noticeWithNoReplacment('2.4.0');
         return ModalController::create($this, "Modals");
     }
 
diff --git a/code/ModalController.php b/code/ModalController.php
index ac6ff3277..1ed88c5c3 100644
--- a/code/ModalController.php
+++ b/code/ModalController.php
@@ -6,6 +6,7 @@
 use SilverStripe\Admin\Forms\EditorExternalLinkFormFactory;
 use SilverStripe\Control\Controller;
 use SilverStripe\Control\RequestHandler;
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Forms\Form;
 
 /**
@@ -30,6 +31,7 @@ public function Link($action = null)
 
     /**
      * @var Controller
+     * @deprecated 2.4.0 Will be removed without equivalent functionality to replace it
      */
     protected $controller;
 
@@ -53,9 +55,11 @@ public function getRequest()
 
     /**
      * @return Controller
+     * @deprecated 2.4.0 Will be removed without equivalent functionality to replace it
      */
     public function getController()
     {
+        Deprecation::noticeWithNoReplacment('2.4.0');
         return $this->controller;
     }
 
@@ -63,9 +67,11 @@ public function getController()
      * Get urlsegment
      *
      * @return string
+     * @deprecated 2.4.0 Will be removed without equivalent functionality to replace it
      */
     public function getName()
     {
+        Deprecation::noticeWithNoReplacment('2.4.0');
         return $this->name;
     }
 
diff --git a/code/SecurityAdmin.php b/code/SecurityAdmin.php
index c17d42ac8..9ab04cc42 100755
--- a/code/SecurityAdmin.php
+++ b/code/SecurityAdmin.php
@@ -59,7 +59,7 @@ class SecurityAdmin extends ModelAdmin implements PermissionProvider
     private static $menu_priority = 0;
 
     /**
-     * @deprecated 5.4.0 Will be renamed to model_class
+     * @deprecated 2.4.0 Will be renamed to model_class
      */
     private static $tree_class = Group::class;