diff --git a/v3_16_0/CDT-commonTypes-v3_16_0.xsd b/v3_16_0/CDT-commonTypes-v3_16_0.xsd
index 09f5215d68ab08f3d6d678a7bce64f67a94bc383..cb467432f434c18e2e442ba641a5abdd48918169 100644
--- a/v3_16_0/CDT-commonTypes-v3_16_0.xsd
+++ b/v3_16_0/CDT-commonTypes-v3_16_0.xsd
@@ -1149,7 +1149,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 	<xs:complexType name="dynAuthDasRequest">
 		<xs:sequence>
 			<xs:element name="originator" type="m2m:ID" minOccurs="1" />
-			<xs:element name="targetedResourceType" type="m2m:resourceType" minOccurs="1" />
+			<xs:element name="targetedResourceType" type="m2m:resourceType" minOccurs="0" />
 			<xs:element name="operation" type="m2m:operation" minOccurs="1" />
 			<xs:element name="originatorIP" minOccurs="0" >
 				<xs:complexType>
@@ -1171,7 +1171,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				</xs:simpleType>
 			</xs:element>            
 			<xs:element name="requestTimestamp" type="m2m:absRelTimestamp" minOccurs="0" />
-			<xs:element name="targetedResourceID" type="xs:anyURI" minOccurs="0" />
+			<xs:element name="targetedResourceID" type="xs:anyURI" minOccurs="1" />
 			<xs:element name="proposedPrivilegesLifetime" type="m2m:absRelTimestamp" minOccurs="0" />
 			<xs:element name="roleIDsFromACPs"  minOccurs="0" >
 				<xs:simpleType>