diff --git a/v1_1_0/CDT-firmware-v1_1_0.xsd b/v1_1_0/CDT-firmware-v1_1_0.xsd
index 17605ca229bb2675831d9a6befc938ed4cc78975..c0b8e685732ec5d9c65c052be3f017fef4c20c12 100644
--- a/v1_1_0/CDT-firmware-v1_1_0.xsd
+++ b/v1_1_0/CDT-firmware-v1_1_0.xsd
@@ -41,7 +41,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 						<xs:element name="name" type="xs:string" />
 						<xs:element name="URL" type="xs:anyURI" />
 						<xs:element name="update" type="xs:boolean" />
-						<xs:element name="updateStatus" type="m2m:actionStatus" minOccurs="0" />
+						<xs:element name="updateStatus" type="m2m:actionStatus" />
             
 						<!-- Child Resources -->
 						<xs:choice minOccurs="0" maxOccurs="1">
diff --git a/v1_1_0/CDT-software-v1_1_0.xsd b/v1_1_0/CDT-software-v1_1_0.xsd
index 0c73ba246717940f46fffd6b327dd78170649e1e..c1901cf0666dbe6bfbf312f8117c60d59e1f22e9 100644
--- a/v1_1_0/CDT-software-v1_1_0.xsd
+++ b/v1_1_0/CDT-software-v1_1_0.xsd
@@ -40,9 +40,9 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 						<xs:element name="version" type="xs:string" />
 						<xs:element name="name" type="xs:string" />
 						<xs:element name="URL" type="xs:anyURI" />
-						<xs:element name="install" type="xs:boolean" minOccurs="0" />
-						<xs:element name="uninstall" type="xs:boolean" minOccurs="0" />
-						<xs:element name="installStatus" type="m2m:actionStatus" minOccurs="0" />
+						<xs:element name="install" type="xs:boolean" />
+						<xs:element name="uninstall" type="xs:boolean" />
+						<xs:element name="installStatus" type="m2m:actionStatus" />
 						<xs:element name="activate" type="xs:boolean" minOccurs="0"/>
 						<xs:element name="deactivate" type="xs:boolean" minOccurs="0"/>
 						<xs:element name="activeStatus" type="m2m:actionStatus" minOccurs="0"/>