diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/OutputDocument.php b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/OutputDocument.php
index c47497f25..f21057f0d 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Cases/OutputDocument.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Cases/OutputDocument.php
@@ -56,6 +56,10 @@ class OutputDocument
     public function getCasesOutputDocument($applicationUid, $userUid, $applicationDocumentUid)
     {
         try {
+            $oAppDocument = \AppDocumentPeer::retrieveByPK( $applicationDocumentUid, 1 );
+            if (is_null( $oAppDocument ) || $oAppDocument->getAppDocStatus() == 'DELETED') {
+                throw (new \Exception('This output document with id: '.$applicationDocumentUid.' doesn\'t exist!'));
+            }
             $sApplicationUID = $applicationUid;
             $sUserUID = $userUid;
             \G::LoadClass('case');
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/ProcessCategory.php b/workflow/engine/src/ProcessMaker/BusinessModel/ProcessCategory.php
index 7cbc34de0..f88293cff 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/ProcessCategory.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/ProcessCategory.php
@@ -282,7 +282,10 @@ class ProcessCategory
     public function addCategory($cat_name)
     {
         try {
-            require_once 'classes/model/ProcessCategory.php';
+            require_once (PATH_TRUNK . "workflow" . PATH_SEP . "engine" . PATH_SEP . "classes". PATH_SEP . "model" . PATH_SEP . "ProcessCategory.php");
+            if ($cat_name == '') {
+                throw (new \Exception( 'cat_name. Process Category name can\'t be null'));
+            }
             $catName = trim( $cat_name );
             if ($this->existsName( $cat_name )) {
                 throw (new \Exception( 'cat_name. Duplicate Process Category name'));
@@ -312,7 +315,7 @@ class ProcessCategory
     public function updateCategory($cat_uid, $cat_name)
     {
         try {
-            require_once 'classes/model/ProcessCategory.php';
+            require_once (PATH_TRUNK . "workflow" . PATH_SEP . "engine" . PATH_SEP . "classes". PATH_SEP . "model" . PATH_SEP . "ProcessCategory.php");
             $catUID = $cat_uid;
             $catName = trim( $cat_name );
             if ($this->existsName( $cat_name )) {
diff --git a/workflow/engine/src/Tests/BusinessModel/InputDocumentsCasesTest.php b/workflow/engine/src/Tests/BusinessModel/InputDocumentsCasesTest.php
index 4d0adb89f..286244aa8 100644
--- a/workflow/engine/src/Tests/BusinessModel/InputDocumentsCasesTest.php
+++ b/workflow/engine/src/Tests/BusinessModel/InputDocumentsCasesTest.php
@@ -177,14 +177,12 @@ class InputDocumentsCasesTest extends \PHPUnit_Framework_TestCase
      * Test error for incorrect value of input document in array
      *
      * @covers \ProcessMaker\BusinessModel\Cases\InputDocument::removeInputDocument
-     * @depends testAddInputDocument
-     * @param array $aResponse
      * @expectedException        Exception
      * @expectedExceptionMessage This input document with id: 12345678912345678912345678912345678 doesn't exist!
      *
      * @copyright Colosa - Bolivia
      */
-    public function testGetCasesInputDocumentErrorIncorrectApplicationValueArray(array $aResponse)
+    public function testRemoveInputDocumentErrorIncorrectApplicationValueArray()
     {
         $this->oInputDocument->removeInputDocument('12345678912345678912345678912345678');
     }
diff --git a/workflow/engine/src/Tests/BusinessModel/OutputDocumentsCasesTest.php b/workflow/engine/src/Tests/BusinessModel/OutputDocumentsCasesTest.php
index 140971356..59972c8d4 100644
--- a/workflow/engine/src/Tests/BusinessModel/OutputDocumentsCasesTest.php
+++ b/workflow/engine/src/Tests/BusinessModel/OutputDocumentsCasesTest.php
@@ -101,6 +101,20 @@ class OutputDocumentsCasesTest extends \PHPUnit_Framework_TestCase
         return $aResponse;
     }
 
+    /**
+     * Test error for incorrect value of application in array
+     *
+     * @covers \ProcessMaker\BusinessModel\Cases\OutputDocument::getCasesOutputDocuments
+     * @expectedException        Exception
+     * @expectedExceptionMessage The Application row '12345678912345678912345678912345678' doesn't exist!
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testGetCasesOutputDocumentsErrorIncorrectApplicationValueArray()
+    {
+        $this->oOutputDocument->getCasesOutputDocuments('12345678912345678912345678912345678', self::$usrUid);
+    }
+
     /**
      * Test get OutputDocuments
      *
@@ -116,6 +130,38 @@ class OutputDocumentsCasesTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue(is_array($response));
     }
 
+    /**
+     * Test error for incorrect value of application in array
+     *
+     * @covers \ProcessMaker\BusinessModel\Cases\OutputDocument::getCasesOutputDocument
+     * @depends testAddCasesOutputDocument
+     * @param array $aResponse
+     * @expectedException        Exception
+     * @expectedExceptionMessage The Application row '12345678912345678912345678912345678' doesn't exist!
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testGetCasesOutputDocumentErrorIncorrectApplicationValueArray(array $aResponse)
+    {
+        $this->oOutputDocument->getCasesOutputDocument('12345678912345678912345678912345678', self::$usrUid, $aResponse["app_doc_uid"]);
+    }
+
+    /**
+     * Test error for incorrect value of output document in array
+     *
+     * @covers \ProcessMaker\BusinessModel\Cases\OutputDocument::getCasesOutputDocument
+     * @depends testAddCasesOutputDocument
+     * @param array $aResponse
+     * @expectedException        Exception
+     * @expectedExceptionMessage This output document with id: 12345678912345678912345678912345678 doesn't exist!
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testGetCasesOutputDocumentErrorIncorrectOutputDocumentValueArray(array $aResponse)
+    {
+        $this->oOutputDocument->getCasesOutputDocument($aResponse["idCase"], self::$usrUid, '12345678912345678912345678912345678');
+    }
+
     /**
      * Test get OutputDocument
      *
@@ -131,6 +177,20 @@ class OutputDocumentsCasesTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue(is_object($response));
     }
 
+    /**
+     * Test error for incorrect value of output document in array
+     *
+     * @covers \ProcessMaker\BusinessModel\Cases\OutputDocument::removeOutputDocument
+     * @expectedException        Exception
+     * @expectedExceptionMessage This output document with id: 12345678912345678912345678912345678 doesn't exist!
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testRemoveOutputDocumentErrorIncorrectOutputDocumentValueArray()
+    {
+        $this->oOutputDocument->removeOutputDocument('12345678912345678912345678912345678');
+    }
+
     /**
      * Test remove OutputDocument
      *
diff --git a/workflow/engine/src/Tests/BusinessModel/ProcessCategoryTest.php b/workflow/engine/src/Tests/BusinessModel/ProcessCategoryTest.php
index f0a1a3e25..742cae5f2 100644
--- a/workflow/engine/src/Tests/BusinessModel/ProcessCategoryTest.php
+++ b/workflow/engine/src/Tests/BusinessModel/ProcessCategoryTest.php
@@ -40,6 +40,20 @@ class ProcessCategoryTest extends \PHPUnit_Framework_TestCase
         }
     }
 
+    /**
+     * Test error for incorrect value of category name in array
+     *
+     * @covers \BusinessModel\ProcessCategory::addCategory
+     * @expectedException        Exception
+     * @expectedExceptionMessage cat_name. Process Category name can't be null
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testAddCategoryErrorIncorrectValue()
+    {
+        $this->oCategory->addCategory('');
+    }
+
     /**
      * Test add Category
      *
@@ -55,6 +69,34 @@ class ProcessCategoryTest extends \PHPUnit_Framework_TestCase
         return $aResponse;
     }
 
+    /**
+     * Test error for incorrect value of category name in array
+     *
+     * @covers \BusinessModel\ProcessCategory::addCategory
+     * @expectedException        Exception
+     * @expectedExceptionMessage cat_name. Duplicate Process Category name
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testAddCategoryErrorDuplicateValue()
+    {
+        $this->oCategory->addCategory('New Category Test');
+    }
+
+    /**
+     * Test error for incorrect value of category name in array
+     *
+     * @covers \BusinessModel\ProcessCategory::updateCategory
+     * @expectedException        Exception
+     * @expectedExceptionMessage cat_name. Duplicate Process Category name
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testUpdateCategoryErrorDuplicateValue()
+    {
+        $this->oCategory->addCategory('New Category Test');
+    }
+
     /**
      * Test put Category
      *
@@ -70,6 +112,20 @@ class ProcessCategoryTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue(is_object($response));
     }
 
+    /**
+     * Test error for incorrect value of category id
+     *
+     * @covers \BusinessModel\ProcessCategory::getCategory
+     * @expectedException        Exception
+     * @expectedExceptionMessage The Category with cat_uid: 12345678912345678912345678912345678 doesn't exist!
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testGetErrorValue()
+    {
+        $this->oCategory->getCategory('12345678912345678912345678912345678');
+    }
+
     /**
      * Test get Category
      *
@@ -85,6 +141,19 @@ class ProcessCategoryTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue(is_object($response));
     }
 
+    /**
+     * Test error for incorrect value of category id
+     *
+     * @covers \BusinessModel\ProcessCategory::deleteCategory
+     * @expectedException        Exception
+     * @expectedExceptionMessage The Category with cat_uid: 12345678912345678912345678912345678 doesn't exist!
+     *
+     * @copyright Colosa - Bolivia
+     */
+    public function testDeleteErrorValue()
+    {
+        $this->oCategory->deleteCategory('12345678912345678912345678912345678');
+    }
 
     /**
      * Test delete Category