diff --git a/module/task/lang/de.php b/module/task/lang/de.php
index 49c129142c..a9dfb4350e 100644
--- a/module/task/lang/de.php
+++ b/module/task/lang/de.php
@@ -276,6 +276,7 @@ $lang->task->error->consumedThisTime = 'Bitte geben Sie die Stunden an';
$lang->task->error->left = 'Bitte geben Sie die verbleibenden Stunden an"';
$lang->task->error->work = '"Bemerkung" muss kleiner als %d Zeichen sein.';
$lang->task->error->teamMember = 'Team members must be at least 2 people';
+$lang->task->error->teamCantOperate = 'Please activate the closed, suspended, and canceled tasks before setting the team.';
$lang->task->error->skipClose = 'Aufgabe: %s ist nicht “Erledigt” oder “Abgebrochen”. Möchten Sie die Aufgabe jetzt schließen?';
$lang->task->error->closeParent = 'Task: %s is the Parent Task, which is automatically closed after all subtasks under the Parent Task are closed and cannot be closed manually.';
$lang->task->error->consumed = 'Aufgabe: %s Hour must be more than 0. Ignore changes to this Task.';
diff --git a/module/task/lang/en.php b/module/task/lang/en.php
index 649c63c40b..13cd21ca77 100755
--- a/module/task/lang/en.php
+++ b/module/task/lang/en.php
@@ -276,6 +276,7 @@ $lang->task->error->consumedThisTime = 'Please enter "Hours Cost"';
$lang->task->error->left = 'Please enter "Hours Left"';
$lang->task->error->work = '"Comment" must be < %d characters.';
$lang->task->error->teamMember = 'Team members must be at least 2 people';
+$lang->task->error->teamCantOperate = 'Please activate the closed, suspended, and canceled tasks before setting the team.';
$lang->task->error->skipClose = 'Task: %s is not “Finished” or “Cancelled”. Do you want to close it?';
$lang->task->error->closeParent = 'Task: %s is the Parent Task, which is automatically closed after all subtasks under the Parent Task are closed and cannot be closed manually.';
$lang->task->error->consumed = 'Task: %s hour must be < 0. Ignore changes to this task.';
diff --git a/module/task/lang/fr.php b/module/task/lang/fr.php
index c602f0a06e..2fc2956dbb 100644
--- a/module/task/lang/fr.php
+++ b/module/task/lang/fr.php
@@ -276,6 +276,7 @@ $lang->task->error->consumedThisTime = 'Entrez le "Coût en Heures"';
$lang->task->error->left = 'Entrez les "Heures Restantes"';
$lang->task->error->work = '"Commentaire" doit être < %d caractères.';
$lang->task->error->teamMember = 'Team members must be at least 2 people';
+$lang->task->error->teamCantOperate = 'Please activate the closed, suspended, and canceled tasks before setting the team.';
$lang->task->error->skipClose = 'Tâche: %s non “Finie” ou “Annulée”. Voulez-vous la fermer malgré tout ?';
$lang->task->error->closeParent = 'Task: %s is the Parent Task, which is automatically closed after all subtasks under the Parent Task are closed and cannot be closed manually.';
$lang->task->error->consumed = 'Tâche: %s heures doivent être < 0. Ignorer changements de cette tâche.';
diff --git a/module/task/lang/zh-cn.php b/module/task/lang/zh-cn.php
index 0b4bed4938..6f2f86dc88 100755
--- a/module/task/lang/zh-cn.php
+++ b/module/task/lang/zh-cn.php
@@ -276,6 +276,7 @@ $lang->task->error->consumedThisTime = '请填写"消耗"';
$lang->task->error->left = '请填写"剩余"';
$lang->task->error->work = '"备注"必须小于%d个字符';
$lang->task->error->teamMember = '团队成员必须大于1人';
+$lang->task->error->teamCantOperate = '已关闭、已暂停、已取消的任务请激活后再维护团队。';
$lang->task->error->skipClose = '任务：%s 不是“已完成”或“已取消”状态，确定要关闭吗？';
$lang->task->error->closeParent = '任务：%s 是父任务，父任务在所有子任务关闭后会自动关闭，无法手动关闭。';
$lang->task->error->consumed = '任务：%s工时不能小于0，忽略该任务工时的改动';
diff --git a/module/task/view/edit.html.php b/module/task/view/edit.html.php
index 7a5c27761c..ae92707175 100644
--- a/module/task/view/edit.html.php
+++ b/module/task/view/edit.html.php
@@ -285,7 +285,12 @@ foreach(explode(',', $config->task->edit->requiredFields) as $field)