diff --git a/workflow/engine/classes/class.actionsByEmailCore.php b/workflow/engine/classes/class.actionsByEmailCore.php
index 0accc134c..49ebc79f9 100644
--- a/workflow/engine/classes/class.actionsByEmailCore.php
+++ b/workflow/engine/classes/class.actionsByEmailCore.php
@@ -45,19 +45,24 @@ class actionsByEmailCoreClass extends PMPlugin
                     throw new Exception('The parameter $data->USR_UID is null.');
                 }
 
-                if ($data->TAS_UID == '') {
+                if ($data->TAS_UID === '') {
                     throw new Exception('The parameter $data->TAS_UID is empty.');
                 }
 
-                if ($data->APP_UID == '') {
+                if ($data->APP_UID === '') {
                     throw new Exception('The parameter $data->APP_UID is empty.');
                 }
 
-                if ($data->DEL_INDEX == '') {
+                if ($data->DEL_INDEX === '') {
                     throw new Exception('The parameter $data->DEL_INDEX is empty.');
                 }
 
-                if ($data->USR_UID == '') {
+                if ($data->DEL_INDEX === 1) {
+                    error_log('The parameter $data->DEL_INDEX is 1, you can not use ActionsByEmail in the initial task', 0);
+                    return;
+                }
+
+                if ($data->USR_UID === '') {
                     error_log('The parameter $data->USR_UID is empty, the routed task may be a self-service type, actions by email does not work with self-service task types.', 0);
                 }
             } catch(Exception $e) {
diff --git a/workflow/engine/classes/class.pmDynaform.php b/workflow/engine/classes/class.pmDynaform.php
index cc6889727..1319b12cb 100644
--- a/workflow/engine/classes/class.pmDynaform.php
+++ b/workflow/engine/classes/class.pmDynaform.php
@@ -27,7 +27,7 @@ class pmDynaform
         $this->getDynaforms();
         $this->synchronizeSubDynaform();
         $this->getCredentials();
-        if (!isset($this->fields["APP_UID"])) {
+        if (is_array($this->fields) && !isset($this->fields["APP_UID"])) {
             $this->fields["APP_UID"] = null;
         }
         if (isset($this->fields["APP_DATA"]["DYN_CONTENT_HISTORY"])) {
@@ -148,6 +148,9 @@ class pmDynaform
 
     public function jsonr(&$json)
     {
+        if(empty($json)){
+            return;
+        }
         foreach ($json as $key => &$value) {
             $sw1 = is_array($value);
             $sw2 = is_object($value);