diff --git a/application/config/constants.php b/application/config/constants.php
index 820bb1c0..be30b318 100755
--- a/application/config/constants.php
+++ b/application/config/constants.php
@@ -101,7 +101,8 @@ define('PO_AMENDED',                     'ST030');
 define('PO_RELEASED',                     'ST026');
 define('PO_AWAITING_RELEASE',                     'ST025');
 define('PO_APPROVED',                     'ST025');
-
+define('PO_APPROVER_ONHOLD',                     'ST051');
+define('PO_RELEASER_ONHOLD',                     'ST052');
 /*store Status*/
 
 define('STORE_DRAFT',                            'ST043');