diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/coffeemachine.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/coffeemachine.xml
index d4d6f8588..8a34bfc99 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/coffeemachine.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/coffeemachine.xml
@@ -23,10 +23,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 	</thing-type>
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/dishwasher.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/dishwasher.xml
index 5aae62991..902fbaced 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/dishwasher.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/dishwasher.xml
@@ -26,10 +26,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridge.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridge.xml
index 0e76fa038..c68c64337 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridge.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridge.xml
@@ -23,10 +23,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridgefreezer.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridgefreezer.xml
index 0982b2581..585ad21d9 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridgefreezer.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/fridgefreezer.xml
@@ -28,10 +28,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hob.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hob.xml
index c091f9ad6..71e6ab990 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hob.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hob.xml
@@ -36,10 +36,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hood.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hood.xml
index 668c81ef1..aedd3eade 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hood.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/hood.xml
@@ -21,10 +21,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies the appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 	</thing-type>
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/oven.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/oven.xml
index 0e4227442..4090178d6 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/oven.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/oven.xml
@@ -32,10 +32,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/tumbledryer.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/tumbledryer.xml
index 22c81484f..24035a421 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/tumbledryer.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/tumbledryer.xml
@@ -28,10 +28,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/washingmachine.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/washingmachine.xml
index 3330fd36e..2a41f546d 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/washingmachine.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/washingmachine.xml
@@ -29,10 +29,9 @@
 		</channels>
 
 		<config-description>
-			<parameter name="uid" type="text">
+			<parameter name="uid" type="text" required="true">
 				<label>ID</label>
 				<description>The identifier identifies one certain appliance on the ZigBee network.</description>
-				<required>true</required>
 			</parameter>
 		</config-description>
 	</thing-type>
diff --git a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/xgw3000.xml b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/xgw3000.xml
index 36cb38e13..184c3daac 100644
--- a/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/xgw3000.xml
+++ b/bundles/org.openhab.binding.miele/src/main/resources/OH-INF/thing/xgw3000.xml
@@ -14,31 +14,27 @@
 		</properties>
 
 		<config-description>
-			<parameter name="ipAddress" type="text">
+			<parameter name="ipAddress" type="text" required="true">
 				<context>network-address</context>
 				<label>Network Address</label>
 				<description>Network address of the Miele@home gateway.</description>
-				<required>true</required>
 			</parameter>
-			<parameter name="interface" type="text">
+			<parameter name="interface" type="text" required="true">
 				<context>network-address</context>
 				<label>Network Address of the Multicast Interface</label>
 				<description>Network address of openHAB host interface where the binding will listen for multicast events coming
 					from the Miele@home gateway</description>
-				<required>true</required>
 			</parameter>
-			<parameter name="userName" type="text">
+			<parameter name="userName" type="text" required="false">
 				<label>Username</label>
 				<description>
 					Name of a registered Miele@home user.
 				</description>
-				<required>false</required>
 			</parameter>
-			<parameter name="password" type="text">
+			<parameter name="password" type="text" required="false">
 				<context>password</context>
 				<label>Password</label>
 				<description>Password for the registered Miele@home</description>
-				<required>false</required>
 			</parameter>
 		</config-description>
 	</bridge-type>