diff --git a/OneM2M_Testcases.ttcn b/OneM2M_Testcases.ttcn
index b954393e0b37bb656e0626d4ceb6941604f3decf..e8fc8b5f28f9430e566380f9ddd5fab0ca7d43df 100644
--- a/OneM2M_Testcases.ttcn
+++ b/OneM2M_Testcases.ttcn
@@ -7,7 +7,7 @@
  *  
  *  @author     oneM2M
  *  @version    $URL: https://forge.etsi.org/svn/oneM2M/trunk/ttcn/OneM2M_Testcases.ttcn $
- *              $Id: OneM2M_Testcases.ttcn 290 2017-05-23 03:26:43Z reinaortega $
+ *              $Id: OneM2M_Testcases.ttcn 291 2017-05-23 04:47:01Z reinaortega $
  *  @desc       Module containing test cases for oneM2M
  *
  */
@@ -2947,6 +2947,10 @@ module OneM2M_Testcases {
 									tc_ac.stop;
 									setverdict(pass, testcasename() & ": Accepted creation for resource type " & int2str(enum2int(p_resourceType)) & " containing attribute " & p_optionalAttribute.name);
 								}
+								[] mcaPort.receive(mw_response(mw_responsePrimitiveOK())) -> value v_response {
+									tc_ac.stop;
+									setverdict(fail, testcasename() & ": Accepted creation for resource type " & int2str(enum2int(p_resourceType)) & " without containing attribute " & p_optionalAttribute.name);
+								}
 								[] mcaPort.receive(mw_response(mw_responsePrimitiveKO)) -> value v_response {
 									tc_ac.stop;
 									setverdict(fail, testcasename() & ": Rejected creation of resource type " & int2str(enum2int(p_resourceType)) & " containing attribute" & p_optionalAttribute.name);