diff --git a/103221-1/TS_103_221_01.xsd b/103221-1/TS_103_221_01.xsd
index 4211ea0b34baf498b34307a368f4da32c6243b4f..8a68e1f2c93c52caf6762883dd09ed7a4f219724 100644
--- a/103221-1/TS_103_221_01.xsd
+++ b/103221-1/TS_103_221_01.xsd
@@ -78,6 +78,7 @@
 				<xs:sequence>
 					<xs:element name="requestMessageType" type="RequestMessageType"/>
 					<xs:element name="errorInformation" type="ErrorInformation"/>
+					<xs:element name="extensionInformation" type="ExtensionInformation" minOccurs="0"/>
 				</xs:sequence>
 			</xs:extension>
 		</xs:complexContent>
@@ -108,6 +109,7 @@
 			<xs:enumeration value="DeleteObject"/>
 			<xs:enumeration value="ListObjectsOfType"/>
 			<xs:enumeration value="DeleteAllObjects"/>
+			<xs:enumeration value="ExtendedRequestMessageType"/>
 		</xs:restriction>
 	</xs:simpleType>
 	<xs:complexType name="ErrorInformation">
@@ -116,6 +118,17 @@
 			<xs:element name="errorDescription" type="xs:string"/>
 		</xs:sequence>
 	</xs:complexType>
+	<xs:complexType name="ExtensionInformation">
+		<xs:sequence>
+			<xs:element name="extensionSpecification" type="ExtensionSpecification"/>
+			<xs:element name="extendedRequestMessageType" type="xs:string"/>
+		</xs:sequence>
+	</xs:complexType>
+	<xs:simpleType name="ExtensionSpecification">
+		<xs:restriction base="xs:string">
+			<xs:enumeration value="TS133128"/>
+		</xs:restriction>
+	</xs:simpleType>
 	<!-- Individual Message Definitions -->
 	<!-- See section 6.2.1 -->
 	<xs:complexType name="ActivateTaskRequest">