diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/LwM2mClient.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/LwM2mClient.java
index e267561cd2..405050bd71 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/LwM2mClient.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/LwM2mClient.java
@@ -24,7 +24,6 @@ import org.eclipse.leshan.core.LwM2m;
 import org.eclipse.leshan.core.LwM2m.Version;
 import org.eclipse.leshan.core.link.Link;
 import org.eclipse.leshan.core.link.attributes.Attribute;
-import org.eclipse.leshan.core.link.lwm2m.MixedLwM2mLink;
 import org.eclipse.leshan.core.model.ObjectModel;
 import org.eclipse.leshan.core.model.ResourceModel;
 import org.eclipse.leshan.core.node.LwM2mMultipleResource;
@@ -211,11 +210,14 @@ public class LwM2mClient {
     }
 
     private LwM2m.Version getObjectIDVerFromDeviceProfile(DeviceProfile deviceProfile) {
-        String defaultObjectIdVer = ((Lwm2mDeviceProfileTransportConfiguration)deviceProfile
-                .getProfileData()
-                .getTransportConfiguration())
-                .getClientLwM2mSettings()
-                .getDefaultObjectIDVer();
+        String defaultObjectIdVer = null;
+        if (deviceProfile != null) {
+            defaultObjectIdVer = ((Lwm2mDeviceProfileTransportConfiguration) deviceProfile
+                    .getProfileData()
+                    .getTransportConfiguration())
+                    .getClientLwM2mSettings()
+                    .getDefaultObjectIDVer();
+        }
         return new Version(defaultObjectIdVer == null ? LWM2M_OBJECT_VERSION_DEFAULT : defaultObjectIdVer);
     }
 
@@ -454,20 +456,17 @@ public class LwM2mClient {
     private void setSupportedClientObjects(){
         this.supportedClientObjects = new ConcurrentHashMap<>();
         for (Link link: this.registration.getSortedObjectLinks()) {
-            MixedLwM2mLink mixedLwM2mLink = (MixedLwM2mLink)link;
-            if(!mixedLwM2mLink.getPath().isRoot()){
-                LwM2mPath lwM2mPath = mixedLwM2mLink.getPath();
-                if (lwM2mPath.isObject()) {
-                    LwM2m.Version ver;
-                    if (mixedLwM2mLink.getAttributes().get("ver")!= null) {
-                        ver = (Version) mixedLwM2mLink.getAttributes().get("ver").getValue();
-                    } else {
-                        ver = getDefaultObjectIDVer();
-                    }
-                    this.supportedClientObjects.put(lwM2mPath.getObjectId(), ver);
-                } else if (this.supportedClientObjects.get(lwM2mPath.getObjectId()) == null){
-                    this.supportedClientObjects.put(lwM2mPath.getObjectId(), getDefaultObjectIDVer());
+            LwM2mPath lwM2mPath = new LwM2mPath(link.getUriReference());
+            if (lwM2mPath.isObject()) {
+                LwM2m.Version ver;
+                if (link.getAttributes().get("ver")!= null) {
+                    ver = (Version) link.getAttributes().get("ver").getValue();
+                } else {
+                    ver = getDefaultObjectIDVer();
                 }
+                this.supportedClientObjects.put(lwM2mPath.getObjectId(), ver);
+            } else if (this.supportedClientObjects.get(lwM2mPath.getObjectId()) == null){
+                this.supportedClientObjects.put(lwM2mPath.getObjectId(), getDefaultObjectIDVer());
             }
         }
     }
diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/util/LwM2MClientSerDes.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/util/LwM2MClientSerDes.java
index 21cdc356a4..8cafc2bfd0 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/util/LwM2MClientSerDes.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/util/LwM2MClientSerDes.java
@@ -23,6 +23,7 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import com.google.protobuf.util.JsonFormat;
 import lombok.SneakyThrows;
+import org.eclipse.leshan.core.LwM2m.Version;
 import org.eclipse.leshan.core.model.ResourceModel;
 import org.eclipse.leshan.core.node.LwM2mMultipleResource;
 import org.eclipse.leshan.core.node.LwM2mNodeException;
@@ -345,7 +346,7 @@ public class LwM2MClientSerDes {
         if (defaultObjectIDVer != null) {
             Field defaultObjectIDVerField = lwM2mClientClass.getDeclaredField("defaultObjectIDVer");
             defaultObjectIDVerField.setAccessible(true);
-            defaultObjectIDVerField.set(lwM2mClient, defaultObjectIDVer.getAsString());
+            defaultObjectIDVerField.set(lwM2mClient, new Version(defaultObjectIDVer.getAsString()));
         }
 
         JsonElement registration = o.get("registration");