diff --git a/src/main/kotlin/org/ro/core/aggregator/ListAggregator.kt b/src/main/kotlin/org/ro/core/aggregator/ListAggregator.kt
index 5711216..0ac00e1 100644
--- a/src/main/kotlin/org/ro/core/aggregator/ListAggregator.kt
+++ b/src/main/kotlin/org/ro/core/aggregator/ListAggregator.kt
@@ -23,7 +23,7 @@ class ListAggregator(actionTitle: String) : BaseAggregator() {
 
     override fun update(logEntry: LogEntry, subType: String) {
 
-        //TODO duplicates should be caught earlier IMPROVE
+        //TODO duplicates should no be propagated to handlers at all: IMPROVE
         if (logEntry.state != EventState.DUPLICATE) {
             when (val obj = logEntry.getTransferObject()) {
                 null -> log(logEntry)
@@ -49,12 +49,11 @@ class ListAggregator(actionTitle: String) : BaseAggregator() {
     }
 
     private fun handleObject(obj: TObject) {
-        console.log("[LA.handleObject]")
         dsp.addData(obj)
         val l = obj.getLayoutLink()!!
         // Json.Layout is invoked first
         l.invokeWith(this)
-        // then Xml.Layout is to be called as well
+        // then Xml.Layout is to be invoked as well
         l.invokeWith(this, "xml")
     }
 
@@ -64,11 +63,16 @@ class ListAggregator(actionTitle: String) : BaseAggregator() {
         //  Eventually due to parallel invocations  - only once required -> IMPROVE
         if (dspl.layout == null) {
             dspl.addLayout(layout)
-        }
-        dspl.propertyLayoutList.forEach { p ->
-            val l = p.link!!
-            if (!l.href.contains("datanucleus")) { //invoking DN links lead to an error
-                l.invokeWith(this)
+            dspl.propertyLayoutList.forEach { p ->
+                val l = p.link!!
+                val isDn = l.href.contains("datanucleus")
+                if (isDn) {
+                    //invoking DN links leads to an error
+                    val id = p.id!!
+                    dspl.addPropertyDescription(id, id)
+                } else {
+                    l.invokeWith(this)
+                }
             }
         }
     }
diff --git a/src/main/kotlin/org/ro/core/model/ListDM.kt b/src/main/kotlin/org/ro/core/model/ListDM.kt
index 2766c44..c791df4 100644
--- a/src/main/kotlin/org/ro/core/model/ListDM.kt
+++ b/src/main/kotlin/org/ro/core/model/ListDM.kt
@@ -24,16 +24,10 @@ class ListDM(override val title: String) : DisplayModel() {
             layout == null -> return false
             grid == null -> return false
             else -> {
-                val ps = propertyList.size
                 val pls = propertyLayoutList.size
                 val pds = propertyDescriptionList.size
-                val descriptionsComplete = ps >= pls
-                if (descriptionsComplete) {
-                    console.log("[ListDM.canBeDisplayed] properties: $ps")
-                    console.log("[ListDM.canBeDisplayed] propertyLayout: $pls")
-                    console.log("[ListDM.canBeDisplayed] propertyDescriptions: $pds")
-                }
-                return descriptionsComplete //&& propertiesComplete
+                val descriptionsComplete = pds >= pls
+                return descriptionsComplete
             }
         }
     }
@@ -41,7 +35,6 @@ class ListDM(override val title: String) : DisplayModel() {
     fun addLayout(layout: Layout) {
         this.layout = layout
         initPropertyLayoutList(layout)
-        console.log("[ListDM.addLayout] propertyLayoutList: ${propertyLayoutList.size}")
     }
 
     private fun initPropertyLayoutList(layout: Layout) {
@@ -72,15 +65,17 @@ class ListDM(override val title: String) : DisplayModel() {
     }
 
     fun addPropertyDescription(p: Property) {
-        console.log("[DL.addPropertyDescription]")
         val id = p.id
         val e: Extensions = p.extensions!!
         val friendlyName = e.friendlyName
-        propertyDescriptionList.put(id, friendlyName)
+        addPropertyDescription(id, friendlyName)
+    }
+
+    fun addPropertyDescription(key: String, value: String) {
+        propertyDescriptionList.put(key, value)
     }
 
     fun addProperty(property: Property) {
-//        console.log("[DL.addProperty]")
         propertyList.add(property)
     }
 
diff --git a/src/main/kotlin/org/ro/to/Link.kt b/src/main/kotlin/org/ro/to/Link.kt
index c9855aa..b2c13e9 100644
--- a/src/main/kotlin/org/ro/to/Link.kt
+++ b/src/main/kotlin/org/ro/to/Link.kt
@@ -40,7 +40,11 @@ data class Link(val rel: String = "",
     }
 
     fun isProperty() : Boolean {
-        return rel.endsWith("/property")
+        return type.endsWith("/object-property")
+    }
+
+    fun isPropertyDescription() : Boolean {
+        return type.endsWith("/property-description")
     }
 
     fun isAction() : Boolean {