diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9242eb1..7d3424f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v2.4.0-SNAPSHOT] - 2022-09-07
+
+#### Enhancement
+
+- [#23819] Adding layers to principal map belonging to more centroids with the same spatial position
+
 ## [v2.3.1] - 2022-08-29
 
 #### Bug fixed
diff --git a/pom.xml b/pom.xml
index 783aeaf..0c6e1c7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -14,7 +14,7 @@
 	<groupId>org.gcube.portlets.user</groupId>
 	<artifactId>geoportal-data-viewer-app</artifactId>
 	<packaging>war</packaging>
-	<version>2.3.1</version>
+	<version>2.4.0-SNAPSHOT</version>
 	<name>GeoPortal Data Viewer App</name>
 	<description>The GeoPortal Data Viewer App is an application to access, discovery and navigate the GeoNa products by a Web-Map Interface</description>
 
diff --git a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/LayerManager.java b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/LayerManager.java
index a843390..671678c 100644
--- a/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/LayerManager.java
+++ b/src/main/java/org/gcube/portlets/user/geoportaldataviewer/client/LayerManager.java
@@ -158,15 +158,15 @@ public class LayerManager {
 					if (olMap.getCurrentResolution() < OLMapManager.LAYER_DETAIL_MAX_RESOLUTION) {
 						Collection<LayerObject> collLO = mapDetailLayerObjects.values();
 						listLO.addAll(collLO);
-						
+
 						ArrayList<LayerObject> layerVisibility = new ArrayList<LayerObject>(collLO.size());
 						layerVisibility.addAll(collLO);
-						//Managing layer visibility. If a layer is not visible has to be not queryable
+						// Managing layer visibility. If a layer is not visible has to be not queryable
 						for (LayerObject layerObject : layerVisibility) {
 							String layerName = layerObject.getLayerItem().getName();
 							boolean isLayerVisible = olMap.isLayerVisible(layerName);
-							if(!isLayerVisible) {
-								GWT.log("From querying removing layername: "+layerName + ", it is not visible");
+							if (!isLayerVisible) {
+								GWT.log("From querying removing layername: " + layerName + ", it is not visible");
 								listLO.remove(layerObject);
 							}
 //							else {
@@ -197,52 +197,76 @@ public class LayerManager {
 
 									GWT.log("GeoNaDataObject's is/are " + listGeonaDataObjects.size());
 									// GWT.log("GeoNaDataObject's: " + listGeonaDataObjects);
-									// GeoportalDataViewerConstants.print("GeoNaDataObject's:
-									// "+listGeonaDataObjects);
+//									 GeoportalDataViewerConstants.print("GeoNaDataObject's:
+//									 "+listGeonaDataObjects);
 
 									if (listGeonaDataObjects == null || listGeonaDataObjects.isEmpty())
 										return;
 
-									FeatureRow feature = null;
+									List<FeatureRow> theFeatures = null;
 
 									MapEventType sourceEvent = queryEvent.getSourceMapEventType();
 
 									// TODO SWTCH FOR EARCH ITEM TYPE
 									for (GeoNaSpatialQueryResult geoNaDataObject : listGeonaDataObjects) {
+										GWT.log("GeoNaDataObject: " + geoNaDataObject);
 										List<FeatureRow> features = geoNaDataObject.getFeatures();
+										LayerItem layerItem = geoNaDataObject.getSourceLayerObject().getLayerItem();
+										GWT.log("   features: " + features);
+										GWT.log("   layerItem: " + layerItem);
 
-										GWT.log("GeoNaDataObject Source layer item name: "
-												+ geoNaDataObject.getSourceLayerObject().getLayerItem().getName());
+										GWT.log("GeoNaDataObject Source layer item name: " + layerItem.getName());
 
-										// USING ONLY THE FIRST FEATURE IN THE LIST
+										HashMap<String, List<FeatureRow>> listUniqueProducts = new HashMap<String, List<FeatureRow>>();
+										// Clustering features for productId
 										if (features != null && features.size() > 0) {
 											String theProductId = null;
-											// I need to show exactly the feature with produc_id == recordId
-											if (mongoItemId != null) {
-												for (FeatureRow fRow : features) {
-													List<String> productIdLst = fRow.getMapProperties()
-															.get("product_id");
+											for (FeatureRow fRow : features) {
+												List<String> productIdLst = fRow.getMapProperties().get("product_id");
+												if (productIdLst != null) {
 													theProductId = productIdLst.get(0);
-													try {
-														// long productId = Long.parseLong(thePID);
-														if (theProductId == mongoItemId) {
-															feature = fRow;
-															GWT.log("Found recorId == product_id with id: "
-																	+ theProductId);
-															break;
+													if (theProductId != null) {
+														List<FeatureRow> listFeatures = listUniqueProducts
+																.get(theProductId);
+														if (listFeatures == null) {
+															listFeatures = new ArrayList<FeatureRow>();
 														}
-													} catch (Exception e) {
-														// TODO: handle exception
+
+														listFeatures.add(fRow);
+														listUniqueProducts.put(theProductId, listFeatures);
 													}
 												}
 											}
 
-											// If mongoItemId not passed, I'm using the first feature returned
+										}
+
+										GWT.log("listUniqueProducts keyset: " + listUniqueProducts.keySet());
+
+										// USING ONLY THE FIRST FEATURE IN THE LIST
+										if (features != null && features.size() > 0) {
+
+											// I need to show exactly the feature with produc_id == recordId
+											if (mongoItemId != null) {
+												GWT.log("MongoItemId is not null: " + mongoItemId);
+												// Searching mongoItemId in the list of product
+												theFeatures = listUniqueProducts.get(mongoItemId);
+												GWT.log("Loaded mongoItemId == product_id with id: " + mongoItemId
+														+ ", the features are: " + theFeatures);
+
+												// the recordId/mongoItemId to show has been passed but not found into
+												// list of
+												// FeatureRow
+												if (theFeatures == null || theFeatures.isEmpty()) {
+													return;
+												}
+											}
+
+											// If mongoItemId not passed
 											if (mongoItemId == null) {
-												feature = features.get(0);
-												List<String> productIdLst = feature.getMapProperties()
-														.get("product_id");
-												if (productIdLst == null) {
+												GWT.log("MongoItemId is null");
+												// Checking if the features returned belonging to detail layers (not
+												// centroids).
+												if (listUniqueProducts.isEmpty()) {
 													// in this case the feature/s returned is/are a (detail) layer/s
 													// belonging
 													// to a record/concessione (not centroid layer),
@@ -257,51 +281,68 @@ public class LayerManager {
 													}
 													return;
 												}
-												theProductId = productIdLst.get(0);
-											} else {
-												// the recordId to show has been passed but not found into list of
-												// FeatureRow
-												if (feature == null) {
-													return;
+											}
+
+											// The features of the first centroid layer selected
+											if (theFeatures == null || theFeatures.size() == 0) {
+												for (String theProductId : listUniqueProducts.keySet()) {
+
+													theFeatures = listUniqueProducts.get(theProductId);
+
+													if (theFeatures.size() > 0)
+														break;
+
 												}
 											}
 
-											GWT.log("the product id is: " + theProductId);
-											// Displaying popup info for centroid layer
+											// Displaying popup info for centroid layer passing the first feature
 											if (sourceEvent.equals(MapEventType.MOUSE_CLICK)
 													|| sourceEvent.equals(MapEventType.ADDED_CENTROID_LAYER_TO_MAP)) {
-												showPopupInfoForCentroidLayer(geoNaDataObject, feature,
+												GWT.log("Source event is: " + MapEventType.MOUSE_CLICK + ", or "
+														+ MapEventType.ADDED_CENTROID_LAYER_TO_MAP);
+
+												// Displaying popup info for centroid layer passing the first feature
+												showPopupInfoForCentroidLayer(geoNaDataObject, theFeatures.get(0),
 														queryEvent.getQueryClickExtent().getCenter());
 											}
 
-											// retrieving and showing WMS layers of a concessione if the ZOOM level is >
-											// QUERY_MIN_ZOOM_LEVEL
 											if (olMap.getCurrentZoomLevel() > OLMapManager.QUERY_MIN_ZOOM_LEVEL) {
-												GeoportalDataViewerServiceAsync.Util.getInstance().getLayersForId(
-														"concessione", theProductId,
-														new AsyncCallback<List<LayerConcessioneDV>>() {
+												GWT.log("Current zoom level is less than QUERY_MIN_ZOOM_LEVEL, Loading all layers of any product");
+												for (String theProductId : listUniqueProducts.keySet()) {
+													GWT.log("Loading layers of theProductId: " + theProductId);
+													// retrieving and showing WMS layers of a concessione if the ZOOM
+													// level
+													// is >
+													// QUERY_MIN_ZOOM_LEVEL
 
-															@Override
-															public void onFailure(Throwable caught) {
-																// TODO Auto-generated method stub
+													GeoportalDataViewerServiceAsync.Util.getInstance().getLayersForId(
+															"concessione", theProductId,
+															new AsyncCallback<List<LayerConcessioneDV>>() {
 
-															}
+																@Override
+																public void onFailure(Throwable caught) {
+																	// TODO Auto-generated method stub
 
-															@Override
-															public void onSuccess(List<LayerConcessioneDV> result) {
-																
-																for (LayerConcessioneDV layer : result) {
-																	GWT.log("Adding layer: " + layer.getLayerName());
-																	addLayer("concessione", layer.getLayerName(),
-																			layer.getLayerName(), layer.getWmsLink(),
-																			false, false, layer.getLayerUUID(), true,
-																			OLMapManager.LAYER_DETAIL_MIN_RESOLUTION,
-																			OLMapManager.LAYER_DETAIL_MAX_RESOLUTION,
-																			layer.getRefersTo());
 																}
 
-															}
-														});
+																@Override
+																public void onSuccess(List<LayerConcessioneDV> result) {
+
+																	for (LayerConcessioneDV layer : result) {
+																		GWT.log("Adding layer: "
+																				+ layer.getLayerName());
+																		addLayer("concessione", layer.getLayerName(),
+																				layer.getLayerName(),
+																				layer.getWmsLink(), false, false,
+																				layer.getLayerUUID(), true,
+																				OLMapManager.LAYER_DETAIL_MIN_RESOLUTION,
+																				OLMapManager.LAYER_DETAIL_MAX_RESOLUTION,
+																				layer.getRefersTo());
+																	}
+
+																}
+															});
+												}
 											} else {
 												// removing all WMS detail layers if the ZOOM level is <
 												// QUERY_MIN_ZOOM_LEVEL
@@ -453,7 +494,7 @@ public class LayerManager {
 								mapDetailLayerObjects.put(key, lo);
 								olMap.addWMSDetailLayer(layerItem);
 								overlayLayerManager.addLayerItem(lo);
-								//overlayLayerManager.show();
+								// overlayLayerManager.show();
 							} else {
 								GWT.log("Skipping detail layer " + key + " already added to Map");
 							}
@@ -550,7 +591,7 @@ public class LayerManager {
 	 * Show popup info for layer.
 	 *
 	 * @param listGeoNaDataObject the list geo na data object
-	 * @param queryClick the query click
+	 * @param queryClick          the query click
 	 */
 	public void showPopupInfoForLayer(List<GeoNaSpatialQueryResult> listGeoNaDataObject, ExtentWrapped queryClick) {
 
@@ -558,9 +599,9 @@ public class LayerManager {
 		final FlowPanel flowPanel = new FlowPanel();
 		flowPanel.getElement().getStyle().setProperty("maxHeight", "600px");
 		scrollPanel.add(flowPanel);
-		
+
 		List<Button> listOpenProject = new ArrayList<Button>();
-		
+
 		final Button expandButton = new Button("Expand");
 		expandButton.setType(ButtonType.LINK);
 		expandButton.setIcon(IconType.EXPAND);
@@ -568,7 +609,7 @@ public class LayerManager {
 		expandButton.setTitle("Show this view in new Window");
 
 		flowPanel.add(expandButton);
-		
+
 		Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 
 			@Override
@@ -581,7 +622,7 @@ public class LayerManager {
 					public void onBrowserEvent(Event event) {
 						if (Event.ONCLICK == event.getTypeInt()) {
 							expandButton.setVisible(false);
-							//hiding the Open Project in expand mode (Modal Window)
+							// hiding the Open Project in expand mode (Modal Window)
 							for (Button butt : listOpenProject) {
 								butt.setVisible(false);
 							}
@@ -591,7 +632,7 @@ public class LayerManager {
 							Coordinate center = queryClick.getCenter();
 							double x = center.getX();
 							double y = center.getY();
-							//"with center x: "+x +", y: "+y;
+							// "with center x: "+x +", y: "+y;
 							ModalWindow mw = new ModalWindow("Query results...", width, height);
 							mw.add(flowPanel);
 							mw.show();
@@ -600,7 +641,7 @@ public class LayerManager {
 				});
 			}
 		});
-		
+
 		String prevConcessioneName = "";
 		for (GeoNaSpatialQueryResult geoNaSpatialQueryResult : listGeoNaDataObject) {
 			try {
@@ -615,23 +656,25 @@ public class LayerManager {
 						|| layerSourceName.compareToIgnoreCase(baseLayerFromISProfile.getName()) == 0) {
 					continue;
 				}
-				
+
 				List<FeatureRow> features = geoNaSpatialQueryResult.getFeatures();
-				
+
 				if (features == null || features.isEmpty()) {
 					continue;
 				}
-				
+
 				String nomeConcessione = lo.getSourceConcessione().getNome();
 				if (prevConcessioneName.compareTo(nomeConcessione) != 0) {
-					String concessioneIntro = nomeConcessione.length()>100? StringUtil.ellipsize(nomeConcessione, 100):nomeConcessione;
+					String concessioneIntro = nomeConcessione.length() > 100
+							? StringUtil.ellipsize(nomeConcessione, 100)
+							: nomeConcessione;
 					Heading heading = new Heading(4, concessioneIntro);
 					heading.setTitle(nomeConcessione);
 					heading.getElement().getStyle().setMarginBottom(10, Unit.PX);
 					flowPanel.add(heading);
-					
+
 					Button buttOpenProject = new Button("Open Project");
-					final String buttId = "open-details-"+Random.nextInt();
+					final String buttId = "open-details-" + Random.nextInt();
 					Element bEl = buttOpenProject.getElement();
 					bEl.setId(buttId);
 					bEl.getStyle().setPaddingLeft(0, Unit.PX);
@@ -651,7 +694,8 @@ public class LayerManager {
 									@Override
 									public void onBrowserEvent(Event event) {
 										if (Event.ONCLICK == event.getTypeInt()) {
-											applicationBus.fireEvent(new ShowDetailsEvent("concessione", lo.getSourceConcessione().getItemId(), nomeConcessione, null));
+											applicationBus.fireEvent(new ShowDetailsEvent("concessione",
+													lo.getSourceConcessione().getItemId(), nomeConcessione, null));
 
 										}
 									}
@@ -723,12 +767,11 @@ public class LayerManager {
 				GeoportalDataViewerConstants.printJs("Error: " + e.getMessage());
 			}
 		}
-		
 
 		olMap.showPopup(scrollPanel.toString(), queryClick.getCenter());
 
 	}
-	
+
 	/**
 	 * Show popup info for centroid layer.
 	 *
@@ -790,7 +833,7 @@ public class LayerManager {
 				GWT.log("Adding images: " + listUI);
 				if (listUI != null && listUI.size() > 0) {
 					UploadedImageDV img = listUI.get(0);
-					if (img!= null && img.getListWsContent() != null) {
+					if (img != null && img.getListWsContent() != null) {
 						WorkspaceContentDV wsContent = img.getListWsContent().get(img.getListWsContent().size() - 1);
 						String theImgHTML = "<img src=\"" + wsContent.getLink() + "\"></img>";
 						GWT.log("theImgHTML: " + theImgHTML);
@@ -898,6 +941,7 @@ public class LayerManager {
 					}
 				});
 			}
+
 		});
 
 	}