diff --git a/src/main/java/org/alfresco/rest/api/impl/ActionsImpl.java b/src/main/java/org/alfresco/rest/api/impl/ActionsImpl.java
index 874dbdf1b3..a4c286973e 100644
--- a/src/main/java/org/alfresco/rest/api/impl/ActionsImpl.java
+++ b/src/main/java/org/alfresco/rest/api/impl/ActionsImpl.java
@@ -94,6 +94,7 @@ public class ActionsImpl implements Actions
                                     map(this::toModel).
                                     collect(Collectors.toList());
                     return new ActionDefinition(
+                            actionDefinition.getName(), // ID is a synonym for name.
                             actionDefinition.getName(),
                             actionDefinition.getTitle(),
                             actionDefinition.getDescription(),
diff --git a/src/main/java/org/alfresco/rest/api/model/ActionDefinition.java b/src/main/java/org/alfresco/rest/api/model/ActionDefinition.java
index 7dc98c3864..c9a9cdf137 100644
--- a/src/main/java/org/alfresco/rest/api/model/ActionDefinition.java
+++ b/src/main/java/org/alfresco/rest/api/model/ActionDefinition.java
@@ -29,6 +29,7 @@ import java.util.List;
 
 public class ActionDefinition
 {
+    private String id;
     private String name;
     private String title;
     private String description;
@@ -44,7 +45,8 @@ public class ActionDefinition
     {
     }
 
-    public ActionDefinition(String name,
+    public ActionDefinition(String id,
+                            String name,
                             String title,
                             String description,
                             List<String> applicableTypes,
@@ -52,6 +54,7 @@ public class ActionDefinition
                             boolean trackStatus,
                             List<ParameterDefinition> parameterDefinitions)
     {
+        this.id = id;
         this.name = name;
         this.title = title;
         this.description = description;
@@ -62,11 +65,11 @@ public class ActionDefinition
     }
 
     /**
-     * Synonym for name.
+     * Will be used as a synonym for name.
      */
     public String getId()
     {
-        return getName();
+        return id;
     }
     
     public String getName()
diff --git a/src/test/java/org/alfresco/rest/api/tests/TestActions.java b/src/test/java/org/alfresco/rest/api/tests/TestActions.java
index 36268da546..365dc3e40c 100644
--- a/src/test/java/org/alfresco/rest/api/tests/TestActions.java
+++ b/src/test/java/org/alfresco/rest/api/tests/TestActions.java
@@ -399,6 +399,12 @@ public class TestActions extends AbstractBaseApiTest
             assertEquals(expectedActions, retrievedActions);
         }
         
+        // Badly formed request -> 400
+        {
+            PublicApiClient.Paging paging = getPaging(0, -1); // -1 is not acceptable
+            actions.getActionDefinitionsForNode(validNode.getId(), createParams(paging, null), 400);
+        }
+        
         // Non-existent node ID
         {
             NodeRef nodeRef = new NodeRef(
@@ -408,5 +414,11 @@ public class TestActions extends AbstractBaseApiTest
             
             actions.getActionDefinitionsForNode(nodeRef.getId(), emptyParams, 404);
         }
+        
+        // Unauthorized -> 401
+        {
+            publicApiClient.setRequestContext(new RequestContext(account1.getId(), person1, "invalid-password"));
+            actions.getActionDefinitionsForNode(validNode.getId(), emptyParams, 401);
+        }
     }
 }