diff --git a/v2_27_0/CDT-commonTypes-v2_27_0.xsd b/v2_27_0/CDT-commonTypes-v2_27_0.xsd
index 0d936bca1f934bf15561dff583403020d991f844..7af99d471ebb37441d1798b3dab9caa142192de7 100644
--- a/v2_27_0/CDT-commonTypes-v2_27_0.xsd
+++ b/v2_27_0/CDT-commonTypes-v2_27_0.xsd
@@ -254,9 +254,9 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 	<!-- auxiliary data type required to define "serializations" below -->
 	<xs:simpleType name="permittedMediaTypes"> 
 		<xs:restriction base="m2m:typeOfContent">
-			<xs:enumeration value="application/xml" />
-			<xs:enumeration value="application/json" />
-			<xs:enumeration value="application/cbor" />
+			<xs:enumeration value="xml" />
+			<xs:enumeration value="json" />
+			<xs:enumeration value="cbor" />
 		</xs:restriction>
 	</xs:simpleType> 
 	
diff --git a/v2_27_0/CDT-enumerationTypes-v2_27_0.xsd b/v2_27_0/CDT-enumerationTypes-v2_27_0.xsd
index fb58efd9c83893ac262e38e08a44860dc0c9d9f2..a578c760241180b19c30bef04e36b140a54a00ae 100644
--- a/v2_27_0/CDT-enumerationTypes-v2_27_0.xsd
+++ b/v2_27_0/CDT-enumerationTypes-v2_27_0.xsd
@@ -322,7 +322,9 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<!-- SPECIALIZATION_SCHEMA_NOT_FOUND -->
 			<xs:enumeration value="4125" /> 
 			<!-- APP_RULE_VALIDATION_FAILED -->
-			<xs:enumeration value="4126" /> 
+			<xs:enumeration value="4126" />
+			<!-- SERVICE_SUBSCRIPTION_NOT_ESTABLISHED -->
+			<xs:enumeration value="4128" /> 
 			
 			
 			<!-- INTERNAL_SERVER_ERROR     -->