diff --git a/v2_4_0/CDT-enumerationTypes-v2_4_0.xsd b/v2_4_0/CDT-enumerationTypes-v2_4_0.xsd
index f36ee0af8cd5315d3ad2643b916462f915a4407d..15e4c1486bbbf907d4c4d067c79933069409463d 100644
--- a/v2_4_0/CDT-enumerationTypes-v2_4_0.xsd
+++ b/v2_4_0/CDT-enumerationTypes-v2_4_0.xsd
@@ -175,6 +175,8 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:enumeration value="2" />
 			<!-- blockingRequest -->
 			<xs:enumeration value="3" />
+			<!-- flexBlocking -->
+			<xs:enumeration value="4" />
 		</xs:restriction>
 	</xs:simpleType>
 
@@ -567,6 +569,8 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:enumeration value="3" />
 			<!-- Delete of Direct Child Resource -->
 			<xs:enumeration value="4" />
+			<!-- Retrieve of Container Resource With No Child Resource -->
+			<xs:enumeration value="5" />
 		</xs:restriction>
 	</xs:simpleType>
 
diff --git a/v2_4_0/CDT-subscription-v2_4_0.xsd b/v2_4_0/CDT-subscription-v2_4_0.xsd
index 836cd60a2674f29050fc096f8017d158028a4af5..7027ea4595579a4c92e0784cfe489268cfe7f2c2 100644
--- a/v2_4_0/CDT-subscription-v2_4_0.xsd
+++ b/v2_4_0/CDT-subscription-v2_4_0.xsd
@@ -78,7 +78,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:element name="sizeBelow" type="xs:positiveInteger" minOccurs="0" />
 			<xs:element name="operationMonitor" type="m2m:operation" minOccurs="0" maxOccurs="5" />
 			<xs:element name="attribute" type="m2m:attribute" minOccurs="0" maxOccurs="unbounded" />
-			<xs:element name="notificationEventType" type="m2m:notificationEventType" minOccurs="0" maxOccurs="4" />
+			<xs:element name="notificationEventType" type="m2m:notificationEventType" minOccurs="0" maxOccurs="5" />
 		</xs:sequence>
 	</xs:complexType>