diff --git a/Apollo/api/application/config/constants.php b/Apollo/api/application/config/constants.php
index 7c64fd6e..48497185 100755
--- a/Apollo/api/application/config/constants.php
+++ b/Apollo/api/application/config/constants.php
@@ -133,6 +133,7 @@ defined('SUBJECTMASTER') OR define('SUBJECTMASTER','T_SubjectMaster');
 defined('SESSIONMASTER') OR define('SESSIONMASTER','T_Session_Master');
 defined('SESSIONDETAILS') OR define('SESSIONDETAILS','T_SessionDetails');
 defined('COURSESUBJECT') OR define('COURSESUBJECT','T_CourseSubject_Details');
+defined('SESSIONSCHEDULE') OR define('SESSIONSCHEDULE','T_Session_Schedule');