diff --git a/v1_8_0/CDT-enumerationTypes-v1_8_0.xsd b/v1_8_0/CDT-enumerationTypes-v1_8_0.xsd
index 16bfcc0419f3a807633a0fc67040dc164be488cc..102bb8ae9a87d752c162e92384ea09654550d921 100644
--- a/v1_8_0/CDT-enumerationTypes-v1_8_0.xsd
+++ b/v1_8_0/CDT-enumerationTypes-v1_8_0.xsd
@@ -317,6 +317,8 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:documentation>Used for memberType attribute in &lt;group&gt; resource.</xs:documentation>
 		</xs:annotation>
 		<xs:restriction base="xs:integer">
+			<!-- Mixed -->
+			<xs:enumeration value="0" />
 			<!-- accessControlPolicy -->
 			<xs:enumeration value="1" />
 			<!-- AE -->
@@ -383,9 +385,6 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:enumeration value="10016" />
 			<!-- scheduleAnnc -->
 			<xs:enumeration value="10018" />
-		
-			<!-- Mixed -->
-			<xs:enumeration value="24" />
 		</xs:restriction>
 	</xs:simpleType>