diff --git a/application/config/constants.php b/application/config/constants.php
index c81e4985..cb6944d7 100644
--- a/application/config/constants.php
+++ b/application/config/constants.php
@@ -63,7 +63,9 @@ define('REQITEM_ONHOLD',                        'ST009');
 define('REQITEM_PARTIALLY_DELIVERED',           'ST010');
 define('REQITEM_DELIVERED',                     'ST011');
 define('REQ_DELETED',                     'ST013');
- 
+define('REQITEM_POCREATED',                     'ST022');
+define('REQITEM_PARTIALLY_PO_CREATED',                     'ST023');
+
 
 define('REQUISTSTATUS',                     '0');
 define('REQUISTITEMSTATUS',                     '1');
@@ -129,6 +131,13 @@ define('FREIGHT_LUMPSUM',                            				'FreightValue');
 define('FREIGHT_PERUOM',                            				'FreightValue * Quantity');
 define('FREIGHT_PERTRIP',                            				'FreightValue');
 
+/*           SERVICE PO VARIABLES    */
+define('SERVICETAX_SERVICETAX_14PERCENT',                            			'((14/100) * basicValue)');
+define('SERVICETAX_EDUCESS_2PERCENT',                            			'((2/100) * ServiceTaxAmount)');
+define('SERVICETAX_HIGHEREDUCESS_1PERCENT',                            			'((1/100) * ServiceTaxAmount)');
+define('SERVICETAX_KRISHIKALYAN',                            			'(((.5)/100) * basicValue)');
+define('SERVICETAX_SWACHHBHARAT',                            			'(((.5)/100) * basicValue)');
+
 /* Purchase Order Status */
 
 define('PO_DRAFT',                            'ST014');
@@ -139,5 +148,8 @@ define('PO_DELIVERED',                        'ST018');
 define('PO_CANCELLED',                        'ST019');
 define('PO_ONHOLD',                           'ST020');
 define('PO_CLOSED',                           'ST021');
+
+
+
 /* End of file constants.php */
 /* Location: ./application/config/constants.php */
\ No newline at end of file
diff --git a/application/config/routes.php b/application/config/routes.php
index 5daadc2d..4ada5ad3 100644
--- a/application/config/routes.php
+++ b/application/config/routes.php
@@ -52,8 +52,8 @@ $route['logout'] = 'user/logout';
 
 $route['userListing'] = 'user/userListing';
 $route['userListing/(:num)'] = "user/userListing/$1";
-$route['purchaseorderListing'] = 'purchaseorder/purchaseorderListing';
-$route['purchaseorderListing/(:num)'] = "purchaseorder/purchaseorderListing/$1";
+//$route['purchaseorderListing'] = 'purchaseorder/purchaseorderListing';
+//$route['purchaseorderListing/(:num)'] = "purchaseorder/purchaseorderListing/$1";
 $route['supplierListing'] = 'supplier/supplierListing';
 $route['supplierListing/(:num)'] = "supplier/supplierListing/$1";
 
@@ -156,6 +156,8 @@ $route['EditRequisition'] = "requisitionform/EditRequistionForm";
 //<-----------PO Flow------------>
 $route['CreatePO'] = "purchaseorder/requisition";
 $route['PurchaseOrder'] = "purchaseorder/CreatePurchaseOrder";
+$route['purchaseorderListing'] = "purchaseorder/PurchaseOrderList";
+$route['EditServicePO'] = "purchaseorder/EditPurchaseOrder";
 
 /* End of file routes.php */
 /* Location: ./application/config/routes.php */