diff --git a/workflow/engine/src/BusinessModel/Cases.php b/workflow/engine/src/BusinessModel/Cases.php
index be7b66bf6..afceb779b 100644
--- a/workflow/engine/src/BusinessModel/Cases.php
+++ b/workflow/engine/src/BusinessModel/Cases.php
@@ -403,10 +403,12 @@ class Cases
      *
      * return array Return an array with Task Case
      */
-
     public function updateReassignCase($caseUid, $userUid, $delIndex, $userUidSource, $userUidTarget)
     {
         try {
+            if (!$delIndex) {
+                $delIndex = \AppDelegation::getCurrentIndex($caseUid);
+            }
             \G::LoadClass('wsBase');
             $ws = new \wsBase();
             $fields = $ws->reassignCase($userUid, $caseUid, $delIndex, $userUidSource, $userUidTarget);
@@ -533,7 +535,7 @@ class Cases
     }
 
     /**
-     * Reassign Case
+     * Route Case
      *
      * @param string $caseUid Unique id of Case
      * @param string $userUid Unique id of User
@@ -542,10 +544,12 @@ class Cases
      *
      * return array Return an array with Task Case
      */
-
     public function updateRouteCase($caseUid, $userUid, $delIndex)
     {
         try {
+            if (!$delIndex) {
+                $delIndex = \AppDelegation::getCurrentIndex($caseUid);
+            }
             \G::LoadClass('wsBase');
             $ws = new \wsBase();
             $fields = $ws->derivateCase($userUid, $caseUid, $delIndex, $bExecuteTriggersBeforeAssignment = false);
@@ -556,6 +560,7 @@ class Cases
         }
     }
 
+
     /**
      * get all upload document that they have send it
      *
diff --git a/workflow/engine/src/Services/Api/ProcessMaker/Cases.php b/workflow/engine/src/Services/Api/ProcessMaker/Cases.php
index 75ad956aa..7bcac29ad 100644
--- a/workflow/engine/src/Services/Api/ProcessMaker/Cases.php
+++ b/workflow/engine/src/Services/Api/ProcessMaker/Cases.php
@@ -240,11 +240,12 @@ class Cases extends Api
     /**
      * @url PUT /:cas_uid/reassign-case
      *
-     * @param string $del_index {@from body}
+     * @param string $cas_uid {@from body} {@min 32}{@max 32}
      * @param string $usr_uid_source {@from body} {@min 32}{@max 32}
      * @param string $usr_uid_target {@from body} {@min 32}{@max 32}
+     * @param string $del_index {@from body}
      */
-    public function doPutReassignCase($cas_uid, $del_index, $usr_uid_source, $usr_uid_target)
+    public function doPutReassignCase($cas_uid, $usr_uid_source, $usr_uid_target, $del_index = null)
     {
         try {
             $userUid = $this->getUserId();
@@ -259,12 +260,10 @@ class Cases extends Api
     /**
      * @url PUT /:cas_uid/route-case
      *
+     * @param string $cas_uid {@from body} {@min 32}{@max 32}
      * @param string $del_index {@from body}
-     * @param string $usr_uid_source {@from body} {@min 32}{@max 32}
-     * @param string $usr_uid_target {@from body} {@min 32}{@max 32}
      */
-
-    public function doPutRouteCase($cas_uid, $del_index)
+    public function doPutRouteCase($cas_uid, $del_index = null)
     {
         try {
             $userUid = $this->getUserId();