Updates UDN documentation to add limitations for web console creation

Author: Steven Smith

modules/nw-cudn-cr-ui.adoc

@@ -6,7 +6,12 @@
 [id="nw-cudn-cr-ui_{context}"]
 = Creating a ClusterUserDefinedNetwork CR by using the web console
 
-You can create a `ClusterUserDefinedNetwork` custom resource (CR) in the {product-title} web console.
+You can create a `ClusterUserDefinedNetwork` custom resource (CR) with a `Layer2` topology in the {product-title} web console.
+
+[NOTE]
+====
+Currently, creation of a `ClusterUserDefinedNetwork` CR with a `Layer3` topology is not supported when using the {product-title} web console.
+====
 
 .Prerequisites
 

modules/nw-udn-cr-ui.adoc

@@ -6,7 +6,12 @@
 [id="nw-udn-cr-ui_{context}"]                                   
 = Creating a UserDefinedNetwork CR by using the web console
 
-You can create a `UserDefinedNetwork` custom resource by using the {product-title} web console.
+You can create a `UserDefinedNetwork` custom resource (CR) with a `Layer2` topology and `Primary` role by using the {product-title} web console.
+
+[NOTE]
+====
+Currently, creation of a `UserDefinedNetwork` CR with a `Layer3` topology or a `Secondary` role are not supported when using the {product-title} web console.
+====
 
 .Prerequisites