diff --git a/main/lp/learnpath.class.php b/main/lp/learnpath.class.php
index 720ead5108..65f1c09015 100755
--- a/main/lp/learnpath.class.php
+++ b/main/lp/learnpath.class.php
@@ -9300,13 +9300,11 @@ class learnpath
             reset($arrLP);
         }
 
-        if ('edit' === $action) {
-            if (true !== api_get_configuration_value('lp_item_prerequisite_dates')) {
-                $excludeExtraFields = array_merge($excludeExtraFields, ['start_date', 'end_date']);
-            }
-            $extraField = new ExtraField('lp_item');
-            $extraField->addElements($form, $id, $excludeExtraFields);
+        if (true !== api_get_configuration_value('lp_item_prerequisite_dates')) {
+            $excludeExtraFields = array_merge($excludeExtraFields, ['start_date', 'end_date']);
         }
+        $extraField = new ExtraField('lp_item');
+        $extraField->addElements($form, $id, $excludeExtraFields);
 
         if ($action !== 'move') {
             $arrHide = [];
diff --git a/main/lp/lp_controller.php b/main/lp/lp_controller.php
index cd8bd84f6c..ebe70f798b 100755
--- a/main/lp/lp_controller.php
+++ b/main/lp/lp_controller.php
@@ -615,6 +615,33 @@ switch ($action) {
                     $maxTimeAllowed = isset($_POST['maxTimeAllowed']) ? $_POST['maxTimeAllowed'] : '';
 
                     if ($_POST['type'] == TOOL_DOCUMENT) {
+
+                        // form validations after submit.
+                        $error = false;
+                        $errMsg = '';
+                        if (true === api_get_configuration_value('lp_item_prerequisite_dates')) {
+                            if (!isset($_POST['extra_start_date'])) {
+                                $_POST['extra_start_date'] = 0;
+                            }
+                            if (!isset($_POST['extra_end_date'])) {
+                                $_POST['extra_end_date'] = 0;
+                            }
+                            $extraStartDate = $_POST['extra_start_date'];
+                            $extraEndDate = $_POST['extra_end_date'];
+                            if (!empty($extraStartDate) && !empty($extraEndDate)) {
+                                $error = !(strtotime($extraEndDate) >= strtotime($extraStartDate));
+                            }
+                            if ($error) {
+                                $errMsg = get_lang('StartDateMustBeBeforeTheEndDate');
+                            }
+                        }
+
+                        if ($error) {
+                            Display::addFlash(Display::return_message($errMsg, 'error'));
+                            header('Location: '.api_request_uri());
+                            exit;
+                        }
+
                         if (isset($_POST['path']) && $_GET['edit'] != 'true') {
                             $document_id = $_POST['path'];
                         } else {
@@ -629,7 +656,7 @@ switch ($action) {
                             }
                         }
 
-                        $_SESSION['oLP']->add_item(
+                        $lastItemId = $_SESSION['oLP']->add_item(
                             $parent,
                             $previous,
                             $type,
@@ -638,6 +665,13 @@ switch ($action) {
                             $description,
                             $prerequisites
                         );
+
+                        if (!empty($lastItemId)) {
+                            $params = $_POST;
+                            $params['item_id'] = $lastItemId;
+                            $extraFieldValues = new ExtraFieldValue('lp_item');
+                            $extraFieldValues->saveFieldValues($params, true);
+                        }
                     } elseif ($_POST['type'] == TOOL_READOUT_TEXT) {
                         if (isset($_POST['path']) && $_GET['edit'] != 'true') {
                             $document_id = $_POST['path'];