diff --git a/api-ref/src/wadls/clustering-api/src/v1/wadl/clustering-api.wadl b/api-ref/src/wadls/clustering-api/src/v1/wadl/clustering-api.wadl
index 35691df77..a26097e2a 100644
--- a/api-ref/src/wadls/clustering-api/src/v1/wadl/clustering-api.wadl
+++ b/api-ref/src/wadls/clustering-api/src/v1/wadl/clustering-api.wadl
@@ -173,7 +173,7 @@
                 <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                     <xsdxt:code href="../samples/clusters-list-response.json"/>
                 </wadl:doc>
-                <param name="clusters" style="plain" required="false"
+                <param name="clusters" style="plain" required="true"
                     xmlns="http://wadl.dev.java.net/2009/02" type="xsd:list">
                     <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                         <para>
@@ -572,7 +572,7 @@
                 <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                     <xsdxt:code href="../samples/profiles-list-response.json"/>
                 </wadl:doc>
-                <param name="profiles" style="query" required="false"
+                <param name="profiles" style="plain" required="true"
                     xmlns="http://wadl.dev.java.net/2009/02" type="xsd:list">
                     <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                         <para>
@@ -780,7 +780,7 @@
                 <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                     <xsdxt:code href="../samples/policies-list-response.json"/>
                 </wadl:doc>
-                <param name="policies" style="query" required="false"
+                <param name="policies" style="plain" required="true"
                     xmlns="http://wadl.dev.java.net/2009/02" type="xsd:list">
                     <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                         <para>
@@ -999,7 +999,7 @@
                 <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                     <xsdxt:code href="../samples/nodes-list-response.json"/>
                 </wadl:doc>
-                <param name="nodes" style="query" required="false"
+                <param name="nodes" style="plain" required="true"
                     xmlns="http://wadl.dev.java.net/2009/02" type="xsd:list">
                     <wadl:doc xmlns="http://docbook.org/ns/docbook" xml:lang="EN">
                         <para>