diff --git a/workflow/engine/content/translations/english/processmaker.en.po b/workflow/engine/content/translations/english/processmaker.en.po
index 5bfde86a1..775a07bcb 100644
--- a/workflow/engine/content/translations/english/processmaker.en.po
+++ b/workflow/engine/content/translations/english/processmaker.en.po
@@ -2107,6 +2107,12 @@ msgstr "in"
 msgid "This case does not exist"
 msgstr "This case does not exist"
 
+# TRANSLATION
+# LABEL/ID_APPLICATION_OR_INDEX_MISSING
+#: LABEL/ID_APPLICATION_OR_INDEX_MISSING
+msgid "Application ID or Delegation Index is missing!. The System can not open the case."
+msgstr "Application ID or Delegation Index is missing!. The System can not open the case."
+
 # TRANSLATION
 # LABEL/ID_PLEASE_SELECT_UPGRADE_FILE
 #: LABEL/ID_PLEASE_SELECT_UPGRADE_FILE
diff --git a/workflow/engine/data/mysql/insert.sql b/workflow/engine/data/mysql/insert.sql
index 968b25263..43d8e21e7 100644
--- a/workflow/engine/data/mysql/insert.sql
+++ b/workflow/engine/data/mysql/insert.sql
@@ -1792,6 +1792,7 @@ INSERT INTO TRANSLATION (TRN_CATEGORY,TRN_ID,TRN_LANG,TRN_VALUE,TRN_UPDATE_DATE
 ( 'LABEL','ID_CASE_IS_CURRENTLY_WITH_ANOTHER_USER','en','The case is currently opened by another user','2014-01-15') ,
 ( 'LABEL','ID_IN','en','in','2014-01-15') ,
 ( 'LABEL','ID_CASE_DOES_NOT_EXISTS','en','This case does not exist','2014-01-15') ,
+( 'LABEL','ID_APPLICATION_OR_INDEX_MISSING','en','Application ID or Delegation Index is missing!. The System can not open the case.','2017-03-30') ,
 ( 'LABEL','ID_PLEASE_SELECT_UPGRADE_FILE','en','Please select the upgrade file','2014-01-15') ,
 ( 'LABEL','ID_PLEASE_SELECT_MAX_X_FIELDS','en','Please select 80 fields at most','2014-01-15') ,
 ( 'LABEL','ID_UPGRADE_READY','en','System upgraded from revision','2014-01-15') ,
diff --git a/workflow/engine/methods/cases/open.php b/workflow/engine/methods/cases/open.php
index 07f4d0219..fe6ea043c 100644
--- a/workflow/engine/methods/cases/open.php
+++ b/workflow/engine/methods/cases/open.php
@@ -34,25 +34,34 @@ if(isset( $_GET['gmail']) && $_GET['gmail'] == 1){
     $tBarGmail = true;
 }
 
-if (! isset( $_GET['APP_UID'] ) || ! isset( $_GET['DEL_INDEX'] )) {
-    if (isset( $_GET['APP_NUMBER'] )) {
-        G::LoadClass( 'case' );
-        $oCase = new Cases();
-        $appUid = $oCase->getApplicationUIDByNumber( htmlspecialchars($_GET['APP_NUMBER']) );
-        $delIndex = $oCase->getCurrentDelegation( $appUid, $_SESSION['USER_LOGGED'] );
-        if (is_null( $appUid )) {
-            throw new Exception( G::LoadTranslation( 'ID_CASE_DOES_NOT_EXISTS' ) );
-        }
-        if (is_null( $delIndex )) {
-            throw new Exception( G::LoadTranslation( 'ID_CASE_IS_CURRENTLY_WITH_ANOTHER_USER' ) );
-        }
-    } else {
-        throw new Exception( "Application ID or Delegation Index is missing!. The System can't open the case." );
+//Check if we have the information for open the case
+if (!isset($_GET['APP_UID']) && !isset($_GET['APP_NUMBER']) && !isset($_GET['DEL_INDEX'])) {
+    throw new Exception(G::LoadTranslation('ID_APPLICATION_OR_INDEX_MISSING'));
+}
+//Get the APP_UID related to APP_NUMBER
+if (!isset($_GET['APP_UID']) && isset($_GET['APP_NUMBER'])) {
+    G::LoadClass('case');
+    $oCase = new Cases();
+    $appUid = $oCase->getApplicationUIDByNumber(htmlspecialchars($_GET['APP_NUMBER']));
+    if (is_null( $appUid )) {
+        throw new Exception(G::LoadTranslation('ID_CASE_DOES_NOT_EXISTS'));
     }
 } else {
     $appUid = htmlspecialchars($_GET['APP_UID']);
+}
+//If we don't have the DEL_INDEX we get the current delIndex. Data reporting tool does not have this information
+if (!isset($_GET['DEL_INDEX'])) {
+    G::LoadClass('case');
+    $oCase = new Cases();
+    $delIndex = $oCase->getCurrentDelegation($appUid, $_SESSION['USER_LOGGED']);
+    if (is_null( $delIndex )) {
+        throw new Exception(G::LoadTranslation('ID_CASE_IS_CURRENTLY_WITH_ANOTHER_USER'));
+    }
+    $_GET['DEL_INDEX'] = $delIndex;
+} else {
     $delIndex = htmlspecialchars($_GET['DEL_INDEX']);
 }
+
 $tasUid = (isset($_GET['TAS_UID'])) ? $tasUid = htmlspecialchars($_GET['TAS_UID']) : '';
 
 require_once ("classes/model/Step.php");