diff --git a/module/custom/control.php b/module/custom/control.php
index 3f991dbaa2..d516fd06ff 100644
--- a/module/custom/control.php
+++ b/module/custom/control.php
@@ -118,6 +118,14 @@ class custom extends control
 
         if(strtolower($this->server->request_method) == "post")
         {
+            $postArray = fixer::input('post');
+            $keys      = array();
+            foreach($postArray->data->keys as $key)
+            {
+                if(in_array($key, $keys)) return $this->send(array('result' => 'fail', 'message' => sprintf($this->lang->custom->notice->repeatKey, $key)));;
+                $keys[] = $key;
+            }
+
             if($module == 'project' and $field == 'unitList')
             {
                 $data = fixer::input('post')->join('unitList', ',')->get();
diff --git a/module/custom/lang/de.php b/module/custom/lang/de.php
index 3d4b106b1e..ac5e37523a 100644
--- a/module/custom/lang/de.php
+++ b/module/custom/lang/de.php
@@ -206,6 +206,7 @@ $lang->custom->notice->confirmDelete       = 'Are you sure you want to delete it
 $lang->custom->notice->confirmReviewCase   = 'Set the case in Wait to Normal?';
 $lang->custom->notice->storyReviewTip      = 'After selecting by individual, position, and department, take the union of these three filters. ';
 $lang->custom->notice->selectAllTip        = 'After selecting all people, the reviewers will be emptied and grayed out while hiding their positions and departments.';
+$lang->custom->notice->repeatKey           = 'Repeat Key %s';
 
 $lang->custom->notice->indexPage['product'] = "ZenTao 8.2+ has Product Homepage. Do you want to go to Product Homepage?";
 $lang->custom->notice->indexPage['project'] = "ZenTao 8.2+ has Project Homepage. Do you want to go to Project Homepage?";
diff --git a/module/custom/lang/en.php b/module/custom/lang/en.php
index 9dfdd0375a..48daaafaa0 100644
--- a/module/custom/lang/en.php
+++ b/module/custom/lang/en.php
@@ -206,6 +206,7 @@ $lang->custom->notice->confirmDelete       = 'Are you sure you want to delete it
 $lang->custom->notice->confirmReviewCase   = 'Set the case in Wait to Normal?';
 $lang->custom->notice->storyReviewTip      = 'After selecting by individual, position, and department, take the union of these three filters. ';
 $lang->custom->notice->selectAllTip        = 'After selecting all people, the reviewers will be emptied and grayed out while hiding their positions and departments.';
+$lang->custom->notice->repeatKey           = 'Repeat Key %s';
 
 $lang->custom->notice->indexPage['product'] = "ZenTao 8.2+ has Product Home. Do you want to go to Product Home?";
 $lang->custom->notice->indexPage['project'] = "ZenTao 8.2+ has Project Home. Do you want to go to Project Home?";
diff --git a/module/custom/lang/fr.php b/module/custom/lang/fr.php
index 76a1ad234f..4bbe7d9751 100644
--- a/module/custom/lang/fr.php
+++ b/module/custom/lang/fr.php
@@ -206,6 +206,7 @@ $lang->custom->notice->confirmDelete       = 'Are you sure you want to delete it
 $lang->custom->notice->confirmReviewCase   = 'Set the case in Wait to Normal?';
 $lang->custom->notice->storyReviewTip      = 'After selecting by individual, position, and department, take the union of these three filters. ';
 $lang->custom->notice->selectAllTip        = 'After selecting all people, the reviewers will be emptied and grayed out while hiding their positions and departments.';
+$lang->custom->notice->repeatKey           = 'Repeat Key %s';
 
 $lang->custom->notice->indexPage['product'] = "ZenTao 8.2+ possède une page d'accueil. Voulez-vous consulter la page d'accueil du produit ?";
 $lang->custom->notice->indexPage['project'] = "ZenTao 8.2+ possède une page d'accueil. Voulez-vous consulter la page d'accueil du produit ?";
diff --git a/module/custom/lang/zh-cn.php b/module/custom/lang/zh-cn.php
index 21bad4d756..bce8b02215 100644
--- a/module/custom/lang/zh-cn.php
+++ b/module/custom/lang/zh-cn.php
@@ -206,6 +206,7 @@ $lang->custom->notice->confirmDelete       = '您确定要删除吗？';
 $lang->custom->notice->confirmReviewCase   = '是否将待评审的用例修改为正常状态？';
 $lang->custom->notice->storyReviewTip      = '按人员、职位、部门勾选后，取所有人员的并集。';
 $lang->custom->notice->selectAllTip        = '勾选所有人员后，会清空并置灰评审人员，同时隐藏职位、部门。';
+$lang->custom->notice->repeatKey           = '%s键重复';
 
 $lang->custom->notice->indexPage['product'] = "从8.2版本起增加了产品主页视图，是否默认进入产品主页？";
 $lang->custom->notice->indexPage['project'] = "从8.2版本起增加了项目主页视图，是否默认进入项目主页？";