diff --git a/OneM2M_Testcases_CSE.ttcn b/OneM2M_Testcases_CSE.ttcn
index f02181e47363a6f22cba54290bb476a065203c04..74bd72a7e666ff1fd55559ae9d958106ebe71b80 100644
--- a/OneM2M_Testcases_CSE.ttcn
+++ b/OneM2M_Testcases_CSE.ttcn
@@ -3023,6 +3023,10 @@ module OneM2M_Testcases_CSE {
 					}//end f_CSE_REG_UPD_002
 				} //end g_CSE_REG_UPD_002
 			    
+				/**
+				  * @desc Check that IUT sends a <remoteCSE> update request with OPTIONAL_ATTRIBUTE attribute.
+			   	  * 
+				 */
 			    group g_CSE_REG_UPD_003 {
 	
 					testcase TC_CSE_REG_UPD_003_ET() runs on Tester system CseSystem {
@@ -3102,7 +3106,7 @@ module OneM2M_Testcases_CSE {
 						var RequestPrimitive v_request;
 						var ResourceType v_resourceType := int16;	//remoteCSE
 						var template UtTriggerPrimitive v_utRequest := m_utCreateRemoteCSE;
-						var charstring v_action := "Please, send a valid RETRIEVE Request containing To set to " & PX_CSE1_ADDRESS & " and Content containing remoteCSE resource containing a valid attribute " & p_attribute[0];
+						var charstring v_action := "Please, send a valid UPDATE Request containing To set to " & PX_CSE1_ADDRESS & " and Content containing remoteCSE resource containing a valid attribute " & p_attribute[0];
 								
 						// Test control
 						if(not(PICS_MN_CSE)) {
@@ -3126,27 +3130,16 @@ module OneM2M_Testcases_CSE {
 						// Test Body
 						v_request := f_getUpdateRequestPrimitive(int16, vc_remoteCseIndex, p_requestPrimitive);
 
-						mccPort.send(m_request(v_request));
 						tc_ac.start;
 						alt {
-							[] mccPort.receive(mw_response(mw_responsePrimitive(int2004, f_getTemplateFromPrimitiveContent(v_request.primitiveContent)))) -> value v_response {
-								tc_ac.stop;
-								setverdict(pass, __SCOPE__ & ": Accepted updation for resource type remoteCSE containing attribute " & p_attribute[0]);
-								f_setResource(v_request.primitiveContent,int16);
-							}
-							[] mccPort.receive(mw_response(mw_responsePrimitiveOK(f_getTemplateFromPrimitiveContent(v_request.primitiveContent)))) -> value v_response {
+							[] mccPortIn.receive(mw_request(v_request)) {
 								tc_ac.stop;
-								setverdict(fail, __SCOPE__ & ": Wrong response status code in the response");
+								setverdict(pass, __SCOPE__ & ": Received request for updation for resource type remoteCSE containing attribute " & p_attribute[0]);
 								f_setResource(v_request.primitiveContent,int16);
 							}
-							[] mccPort.receive(mw_response(mw_responsePrimitiveOK)) -> value v_response {
-								tc_ac.stop;
-								setverdict(fail, __SCOPE__ & ": Accepted updation for resource type remoteCSE without containing attribute " & p_attribute[0]);
-								f_setResource(v_request.primitiveContent,int16);
-							}
-							[] mccPort.receive(mw_response(mw_responsePrimitiveKO)) -> value v_response {
+							[] mccPortIn.receive {
 								tc_ac.stop;
-								setverdict(fail, __SCOPE__ & ": Rejected updation of resource type remoteCSE containing attribute" & p_attribute[0]);
+								setverdict(fail, __SCOPE__ & ": Error: Did not receive update request for resource type remoteCSE");
 							}
 							[] tc_ac.timeout {
 								setverdict(fail, __SCOPE__ & ": No answer while updating resource type remoteCSE");