diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
index 0dd798e63..4defc5ec0 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases.php
@@ -321,7 +321,7 @@ class Cases
                                 $array['app_name'] = $array['caseName'];
                                 $array['app_status'] = $array['caseStatus'];
                                 $array['app_init_usr_uid'] = $array['caseCreatorUser'];
-                                $array['app_init_usr_username'] = $array['caseCreatorUserName'];
+                                $array['app_init_usr_username'] = trim($array['caseCreatorUserName']);
                                 $array['pro_uid'] = $array['processId'];
                                 $array['pro_name'] = $array['processName'];
                                 $array['app_create_date'] = $array['createDate'];
@@ -412,7 +412,7 @@ class Cases
                     $array['app_name'] = $array['caseName'];
                     $array['app_status'] = $array['caseStatus'];
                     $array['app_init_usr_uid'] = $array['caseCreatorUser'];
-                    $array['app_init_usr_username'] = $array['caseCreatorUserName'];
+                    $array['app_init_usr_username'] = trim($array['caseCreatorUserName']);
                     $array['pro_uid'] = $array['processId'];
                     $array['pro_name'] = $array['processName'];
                     $array['app_create_date'] = $array['createDate'];
@@ -529,6 +529,14 @@ class Cases
             if ($variables) {
                 $variables = array_shift($variables);
             }
+            $oProcesses = new \Processes();
+            if (! $oProcesses->processExists($processUid)) {
+                throw (new \Exception( 'Invalid value specified for \'pro_uid\''));
+            }
+            $oTask = new \Task();
+            if (! $oTask->taskExists($taskUid)) {
+                throw (new \Exception( 'Invalid value specified for \'tas_uid\''));
+            }
             $fields = $ws->newCase($processUid, $userUid, $taskUid, $variables);
             $array = json_decode(json_encode($fields), true);
             if ($array ["status_code"] != 0) {
@@ -570,6 +578,14 @@ class Cases
             } elseif ($variables == null) {
                 $variables = array(array());
             }
+            $oProcesses = new \Processes();
+            if (! $oProcesses->processExists($processUid)) {
+                throw (new \Exception( 'Invalid value specified for \'pro_uid\''));
+            }
+            $user = new \Users();
+            if (! $user->userExists( $userUid )) {
+                throw (new \Exception( 'Invalid value specified for \'usr_uid\''));
+            }
             $fields = $ws->newCaseImpersonate($processUid, $userUid, $variables, $taskUid);
             $array = json_decode(json_encode($fields), true);
             if ($array ["status_code"] != 0) {
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/InputDocument.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/InputDocument.php
index 8f5d1b8a8..7cb818936 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/InputDocument.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/InputDocument.php
@@ -14,6 +14,10 @@ class InputDocument
     public function getCasesInputDocuments($applicationUid, $userUid)
     {
         try {
+            $oApplication = \ApplicationPeer::retrieveByPk($applicationUid);
+            if (!is_object($oApplication)) {
+                throw (new \Exception("The Application with app_uid: '$applicationUid' doesn't exist!"));
+            }
             $sApplicationUID = $applicationUid;
             $sUserUID = $userUid;
             \G::LoadClass('case');
@@ -32,7 +36,7 @@ class InputDocument
                     $docrow['app_doc_filename'] = $row['APP_DOC_FILENAME'];
                     $docrow['doc_uid'] = $row['DOC_UID'];
                     $docrow['app_doc_version'] = $row['DOC_VERSION'];
-                    $docrow['app_doc_create_date'] = $row['CREATE_DATE'];
+                    $docrow['app_doc_create_date'] =     $row['CREATE_DATE'];
                     $docrow['app_doc_create_user'] = $row['CREATED_BY'];
                     $docrow['app_doc_type'] = $row['TYPE'];
                     $docrow['app_doc_index'] = $row['APP_DOC_INDEX'];
@@ -60,7 +64,7 @@ class InputDocument
         try {
             $oAppDocument = \AppDocumentPeer::retrieveByPK( $inputDocumentUid, 1 );
             if (is_null( $oAppDocument ) || $oAppDocument->getAppDocStatus() == 'DELETED') {
-                throw (new \Exception('This input document with id: '.$inputDocumentUid.' doesn\'t exist!'));
+                throw (new \Exception('This input document with inp_doc_uid: '.$inputDocumentUid.' doesn\'t exist!'));
             }
             $sApplicationUID = $applicationUid;
             $sUserUID = $userUid;
@@ -109,7 +113,7 @@ class InputDocument
         try {
             $oAppDocument = \AppDocumentPeer::retrieveByPK( $inputDocumentUid, 1 );
             if (is_null( $oAppDocument ) || $oAppDocument->getAppDocStatus() == 'DELETED') {
-                throw (new \Exception('This input document with id: '.$inputDocumentUid.' doesn\'t exist!'));
+                throw (new \Exception('This input document with inp_doc_uid: '.$inputDocumentUid.' doesn\'t exist!'));
             }
             \G::LoadClass('wsBase');
             $ws = new \wsBase();