Index: branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping_Multiple.php
===================================================================
--- branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping_Multiple.php	(revision 21420)
+++ branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping_Multiple.php	(revision 21437)
@@ -70,4 +70,10 @@
         $objCustomer = new SC_Customer_Ex();
         $objFormParam = new SC_FormParam_Ex();
+
+        // 複数配送先指定が無効な場合はエラー
+        if (USE_MULTIPLE_SHIPPING === false) {
+            SC_Utils_Ex::sfDispSiteError(PAGE_ERROR, '', true);
+            exit;
+        }
 
         $this->tpl_uniqid = $objSiteSess->getUniqId();
Index: branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping.php
===================================================================
--- branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping.php	(revision 21420)
+++ branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping.php	(revision 21437)
@@ -197,4 +197,10 @@
         // 複数配送ページへ遷移
         case 'multiple':
+            // 複数配送先指定が無効な場合はエラー
+            if (USE_MULTIPLE_SHIPPING === false) {
+                SC_Utils_Ex::sfDispSiteError(PAGE_ERROR, '', true);
+                exit;
+            }
+
             $this->lfInitParam($objFormParam);
             $objFormParam->setParam($_POST);
Index: branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping_Deliv.php
===================================================================
--- branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping_Deliv.php	(revision 21420)
+++ branches/version-2_12-dev/data/class/pages/shopping/LC_Page_Shopping_Deliv.php	(revision 21437)
@@ -135,4 +135,10 @@
         // お届け先複数指定
         case 'multiple':
+            // 複数配送先指定が無効な場合はエラー
+            if (USE_MULTIPLE_SHIPPING === false) {
+                SC_Utils_Ex::sfDispSiteError(PAGE_ERROR, '', true);
+                exit;
+            }
+
             SC_Response_Ex::sendRedirect('multiple.php');
             exit;