diff --git a/OneM2M_Testcases_CSE_Release_2.ttcn b/OneM2M_Testcases_CSE_Release_2.ttcn
index de1b093ef039a42895ad7a4f0dc04f5192488e20..55c33fc15d0a37b05dd5a1c72b71a7d423724202 100644
--- a/OneM2M_Testcases_CSE_Release_2.ttcn
+++ b/OneM2M_Testcases_CSE_Release_2.ttcn
@@ -7548,6 +7548,72 @@ module OneM2M_Testcases_CSE_Release_2 {
 				
 			}
 		 } //end group g_CSE_PCH_005
+		 
+		 /**
+		  * @desc Check that the IUT sends the response with a status to the CSE1 when the request expires according to its Request Expiration Timestamp
+		  * 
+		  */
+		 testcase TC_CSE_PCH_006() runs on Tester system CseSystem {
+	
+			 var CseSimu v_cse1 := CseSimu.create("CSE1") alive;
+				
+			 v_cse1.start(f_CSE_PCH_006());
+
+			 v_cse1.done;
+	  	  		
+		 }
+
+		 function f_CSE_PCH_006() runs on CseSimu {
+			 // Local variables
+			 var integer v_aeIndex := -1;
+			 var integer v_resourceIndex := -1;
+			 var RequestPrimitive v_request;
+			 var MsgIn v_response;
+			 var RequestPrimitive v_requestNotify;
+
+			 // Test control
+
+			 // Test component configuration
+			 f_cf02UpCseSimuMaster();
+
+			 // Test adapter configuration
+
+			 // Preamble
+			 vc_remoteCseIndex := f_cse_registerRemoteCse(m_createRemoteCSEBase);
+
+			 vc_ae1.start(f_cse_preamble_registerAe());//AE1 is registred;
+			 vc_ae1.done;
+			 f_cseSimu_checkComponentDoneAndGetVerdict(vc_ae1);
+			 v_aeIndex := f_getResource(vc_ae1);
+	
+			 vc_ae1.start(f_cse_createResource(int15, m_createPollingChannelBase, v_aeIndex));//PollingChannel is created;
+			 vc_ae1.done;
+
+			 v_requestNotify := valueof(m_notify(f_getResourceAddress(v_aeIndex)));	
+			 v_request.from_ := PX_CSE1_ID;
+		
+			 mccPort.send(m_request(v_request));
+			 tc_ac.start;
+			 alt {
+				 [] mccPort.receive(mw_response(mw_responsePrimitive(int4108))) -> value vc_response {
+					 tc_ac.stop;
+					 setverdict(pass, __SCOPE__ & ":Response status code set to 4108 (REQUEST_TIMEOUT)");
+				 }
+				 [] mccPort.receive(mw_response()) {
+					 tc_ac.stop;
+					 setverdict(inconc, __SCOPE__&":INFO: Unexpected message received");
+				 }
+				 [] tc_ac.timeout {
+					 setverdict(inconc, __SCOPE__&":INFO: No answer while performing notification");
+				 }
+			 }	
+		
+			 // Postamble
+			 f_cse_postamble_deleteResourcesCSE();
+
+			 // Tear down
+			 f_cf02DownCseSimuMaster();
+		 } // end f_CSE_PCH_006
 			
 		}//end group PollingChannel