diff --git a/CDT-commonTypes.xsd b/CDT-commonTypes.xsd
index f544a64eaa50f3b826ae3fed764bcaa8f23a5b46..090cb6d8c09e3815d8b648a7de88b54f0f5ab3bd 100644
--- a/CDT-commonTypes.xsd
+++ b/CDT-commonTypes.xsd
@@ -491,9 +491,9 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:element name="deliveryAggregation" type="xs:boolean" minOccurs="0" />
 			<xs:element name="groupRequestIdentifier" type="xs:string" minOccurs="0" />
 			<xs:element name="filterCriteria" type="m2m:filterCriteria" minOccurs="0" />
-			<xs:element name="discoveryResultType" type="m2m:discResType" minOccurs="0" />
+			<xs:element name="desiredIdentifierResultType" type="m2m:desIdResType" minOccurs="0" />
 			<xs:element name="roleIDs" minOccurs="0">      
-				<xs:simpleType>
+				<xs:simpleType> 
 					<xs:restriction> 
 						<xs:simpleType> 
 							<xs:list itemType="m2m:roleID" /> 
diff --git a/CDT-delivery.xsd b/CDT-delivery.xsd
index f5e8bc9572d9ebd0e531f2a551c650d726a38b62..7e8b5e872ca4d258d4c4cc34ac4d0b7c9f0ba537 100644
--- a/CDT-delivery.xsd
+++ b/CDT-delivery.xsd
@@ -38,7 +38,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				<xs:extension base="m2m:regularResource">
 					<xs:sequence>
 						<!-- Common Attribute, specific to <container>, <contentInstance>, <request> and <delivery> resources -->
-						<xs:element name="stateTag" type="xs:nonNegativeInteger" />
+						
 						<!-- Resource Specific Attributes -->
 						<xs:element name="source" type="m2m:ID" />
 						<xs:element name="target" type="m2m:ID" />
diff --git a/CDT-enumerationTypes.xsd b/CDT-enumerationTypes.xsd
index bcac57cb29a8dc7dbaf3a72995d130a9edd07273..6467b4ef1dc4b680f95ca327eede515297020737 100644
--- a/CDT-enumerationTypes.xsd
+++ b/CDT-enumerationTypes.xsd
@@ -242,7 +242,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 		</xs:restriction>
 	</xs:simpleType>
 
-	<xs:simpleType name="discResType">
+	<xs:simpleType name="desIdResType">
 		<xs:annotation>
 			<xs:documentation>Used in &lt;request&gt; </xs:documentation>
 		</xs:annotation>
@@ -319,6 +319,8 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 			<xs:enumeration value="4116" />    
 			<!-- ORIGINATOR_HAS_ALREADY_REGISTERED -->
 			<xs:enumeration value="4117" />    
+			<!-- SPECIALIZATION_SCHEMA_NOT_FOUND -->
+			<xs:enumeration value="4124" />    
 			<!-- INTERNAL_SERVER_ERROR     -->
             <xs:enumeration value="5000" />              
             <!-- NOT_IMPLEMENTED           -->
diff --git a/CDT-request.xsd b/CDT-request.xsd
index 7c5e31f21ef30affc8b785c559f21a0e5151431e..ca7a6f4c938d0ebcadb6ed58af80eaba54810d79 100644
--- a/CDT-request.xsd
+++ b/CDT-request.xsd
@@ -37,7 +37,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				<xs:extension base="m2m:regularResource">
 					<xs:sequence>
 						<!-- Common Attribute, specific to <container>, <contentInstance>, <request> and <delivery> resources -->
-						<xs:element name="stateTag" type="xs:nonNegativeInteger" />
+						
 						<!-- Resource Specific Attributes -->
 						<xs:element name="operation" type="m2m:operation" />
 						<xs:element name="target" type="xs:anyURI" />
diff --git a/CDT-requestPrimitive.xsd b/CDT-requestPrimitive.xsd
index b46c072549d86df564e004a44dcfe2d0d65add33..bdca05be55f3abc6a6289237440596359a68b320 100644
--- a/CDT-requestPrimitive.xsd
+++ b/CDT-requestPrimitive.xsd
@@ -79,8 +79,8 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
           <xs:element name="groupRequestIdentifier" type="xs:string" minOccurs="0"/>        
           <!-- parameter "Filter Criteria" -->
           <xs:element name="filterCriteria" type="m2m:filterCriteria" minOccurs="0"/>
-          <!-- parameter "Discovery Result Type" -->
-          <xs:element name="discoveryResultType" type="m2m:discResType" minOccurs="0"/>
+          <!-- parameter "Desired Identifier Result Type" -->
+          <xs:element name="desiredIdentifierResultType" type="m2m:desIdResType" minOccurs="0"/>
           <!-- parameter "Tokens" -->
           <xs:element name="tokens" minOccurs="0">
             <xs:simpleType>
diff --git a/CDT-timeSeries.xsd b/CDT-timeSeries.xsd
index b79bd3611be750aa7377a3a0d0204ca373843599..9b833f641cc5fc7f6d0e4b2b24029310514e35a7 100644
--- a/CDT-timeSeries.xsd
+++ b/CDT-timeSeries.xsd
@@ -38,8 +38,8 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				<xs:extension base="m2m:announceableResource">
 					<xs:sequence>
 						<!-- Common Attribute, specific to <container>, <contentInstance>, <request> and <delivery> and other resources -->
-						<xs:element name="stateTag" type="xs:nonNegativeInteger" />
 						<xs:element name="creator" type="m2m:ID" />
+						
 						<!-- Resource Specific Attributes -->
 						<xs:element name="maxNrOfInstances" type="xs:nonNegativeInteger" minOccurs="0" />
 						<xs:element name="maxByteSize" type="xs:nonNegativeInteger" minOccurs="0" />
@@ -74,7 +74,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 				<xs:extension base="m2m:announcedResource">
 					<xs:sequence>
 						<!-- Common Attribute, specific to <container>, <contentInstance>, <request> and <delivery> resources -->
-						<xs:element name="stateTag" type="xs:nonNegativeInteger" minOccurs="0" />
+						
 						<!-- Resource Specific Attributes -->
 						<xs:element name="maxNrOfInstances" type="xs:nonNegativeInteger" minOccurs="0" />
 						<xs:element name="maxByteSize" type="xs:nonNegativeInteger" minOccurs="0" />