diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java
index eb1c688950..2953183027 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/MqttTransportHandler.java
@@ -128,7 +128,7 @@ public class MqttTransportHandler extends ChannelInboundHandlerAdapter implement
 
     private final UUID sessionId;
     protected final MqttTransportContext context;
-    public final TransportService transportService;
+    private final TransportService transportService;
     private final SchedulerComponent scheduler;
     private final SslHandler sslHandler;
     private final ConcurrentMap<MqttTopicMatcher, Integer> mqttQoSMap;
@@ -142,7 +142,7 @@ public class MqttTransportHandler extends ChannelInboundHandlerAdapter implement
     private final ConcurrentHashMap<String, Integer> chunkSizes;
     private final ConcurrentMap<Integer, TransportProtos.ToDeviceRpcRequestMsg> rpcAwaitingAck;
 
-    public TopicType attrSubTopicType;
+    private TopicType attrSubTopicType;
     private TopicType rpcSubTopicType;
     private TopicType attrReqTopicType;
     private TopicType toServerRpcSubTopicType;
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewayDeviceSessionContext.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewayDeviceSessionContext.java
index ab3a1f5e4f..9c133c2457 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewayDeviceSessionContext.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewayDeviceSessionContext.java
@@ -35,12 +35,12 @@ import java.util.concurrent.ConcurrentMap;
  * Created by ashvayka on 19.01.17.
  */
 @Slf4j
-public abstract class AbstractGatewayDeviceSessionContext extends MqttDeviceAwareSessionContext implements SessionMsgListener {
+public abstract class AbstractGatewayDeviceSessionContext<T extends AbstractGatewaySessionHandler> extends MqttDeviceAwareSessionContext implements SessionMsgListener {
 
-    protected final AbstractGatewaySessionHandler parent;
+    protected final T parent;
     private final TransportService transportService;
 
-    public AbstractGatewayDeviceSessionContext(AbstractGatewaySessionHandler parent, TransportDeviceInfo deviceInfo,
+    public AbstractGatewayDeviceSessionContext(T parent, TransportDeviceInfo deviceInfo,
                                                DeviceProfile deviceProfile, ConcurrentMap<MqttTopicMatcher, Integer> mqttQoSMap,
                                                TransportService transportService) {
         super(UUID.randomUUID(), mqttQoSMap);
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewaySessionHandler.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewaySessionHandler.java
index a6361978b3..66c5823f11 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewaySessionHandler.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/AbstractGatewaySessionHandler.java
@@ -84,13 +84,13 @@ public abstract class AbstractGatewaySessionHandler {
     private static final String DEVICE_PROPERTY = "device";
 
     protected final MqttTransportContext context;
-    private final TransportService transportService;
+    protected final TransportService transportService;
     protected final TransportDeviceInfo gateway;
     protected final UUID sessionId;
     private final ConcurrentMap<String, Lock> deviceCreationLockMap;
     private final ConcurrentMap<String, MqttDeviceAwareSessionContext> devices;
     private final ConcurrentMap<String, ListenableFuture<MqttDeviceAwareSessionContext>> deviceFutures;
-    private final ConcurrentMap<MqttTopicMatcher, Integer> mqttQoSMap;
+    protected final ConcurrentMap<MqttTopicMatcher, Integer> mqttQoSMap;
     protected final ChannelHandlerContext channel;
     protected final DeviceSessionCtx deviceSessionCtx;
 
@@ -252,7 +252,7 @@ public abstract class AbstractGatewaySessionHandler {
                         new TransportServiceCallback<>() {
                             @Override
                             public void onSuccess(GetOrCreateDeviceFromGatewayResponse msg) {
-                                GatewayDeviceSessionContext deviceSessionCtx = newDeviceSessionCtx(msg) ;
+                                AbstractGatewayDeviceSessionContext deviceSessionCtx = newDeviceSessionCtx(msg);
                                 if (devices.putIfAbsent(deviceName, deviceSessionCtx) == null) {
                                     log.trace("[{}] First got or created device [{}], type [{}] for the gateway session", sessionId, deviceName, deviceType);
                                     SessionInfoProto deviceSessionInfo = deviceSessionCtx.getSessionInfo();
@@ -282,10 +282,7 @@ public abstract class AbstractGatewaySessionHandler {
             }
     }
 
-    private GatewayDeviceSessionContext newDeviceSessionCtx(GetOrCreateDeviceFromGatewayResponse msg) {
-        return this.deviceSessionCtx.isSparkplug() ? new SparkplugDeviceSessionContext(this, msg.getDeviceInfo(), msg.getDeviceProfile(), mqttQoSMap, transportService) :
-         new GatewayDeviceSessionContext(this, msg.getDeviceInfo(), msg.getDeviceProfile(), mqttQoSMap, transportService);
-    }
+    protected abstract AbstractGatewayDeviceSessionContext newDeviceSessionCtx(GetOrCreateDeviceFromGatewayResponse msg);
 
     protected int getMsgId(MqttPublishMessage mqttMsg) {
         return mqttMsg.variableHeader().packetId();
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewayDeviceSessionContext.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewayDeviceSessionContext.java
index 4c3a20adda..045723555c 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewayDeviceSessionContext.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewayDeviceSessionContext.java
@@ -24,9 +24,9 @@ import java.util.concurrent.ConcurrentMap;
 /**
  * Created by nickAS21 on 26.12.22
  */
-public class GatewayDeviceSessionContext extends AbstractGatewayDeviceSessionContext{
+public class GatewayDeviceSessionContext extends AbstractGatewayDeviceSessionContext<GatewaySessionHandler> {
 
-    public GatewayDeviceSessionContext(AbstractGatewaySessionHandler parent,
+    public GatewayDeviceSessionContext(GatewaySessionHandler parent,
                                        TransportDeviceInfo deviceInfo,
                                        DeviceProfile deviceProfile,
                                        ConcurrentMap<MqttTopicMatcher, Integer> mqttQoSMap,
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewaySessionHandler.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewaySessionHandler.java
index 9d1834f358..c1c82efd15 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewaySessionHandler.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewaySessionHandler.java
@@ -18,6 +18,7 @@ package org.thingsboard.server.transport.mqtt.session;
 import io.netty.buffer.ByteBuf;
 import io.netty.handler.codec.mqtt.MqttPublishMessage;
 import org.thingsboard.server.common.transport.adaptor.AdaptorException;
+import org.thingsboard.server.common.transport.auth.GetOrCreateDeviceFromGatewayResponse;
 
 import java.util.UUID;
 
@@ -48,4 +49,9 @@ public class GatewaySessionHandler extends AbstractGatewaySessionHandler {
         }
     }
 
+    @Override
+    protected GatewayDeviceSessionContext newDeviceSessionCtx(GetOrCreateDeviceFromGatewayResponse msg) {
+         return new GatewayDeviceSessionContext(this, msg.getDeviceInfo(), msg.getDeviceProfile(), mqttQoSMap, transportService);
+    }
+
 }
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugDeviceSessionContext.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugDeviceSessionContext.java
index 4416501dea..06a398b9c1 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugDeviceSessionContext.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugDeviceSessionContext.java
@@ -27,13 +27,13 @@ import java.util.UUID;
 import java.util.concurrent.ConcurrentMap;
 
 @Slf4j
-public class SparkplugDeviceSessionContext extends GatewayDeviceSessionContext{
+public class SparkplugDeviceSessionContext extends AbstractGatewayDeviceSessionContext<SparkplugNodeSessionHandler> {
 
-    public SparkplugDeviceSessionContext(AbstractGatewaySessionHandler parent,
+    public SparkplugDeviceSessionContext(SparkplugNodeSessionHandler parent,
                                          TransportDeviceInfo deviceInfo,
                                          DeviceProfile deviceProfile,
                                          ConcurrentMap<MqttTopicMatcher,
-                                         Integer> mqttQoSMap,
+                                                 Integer> mqttQoSMap,
                                          TransportService transportService) {
         super(parent, deviceInfo, deviceProfile, mqttQoSMap, transportService);
     }
@@ -43,12 +43,12 @@ public class SparkplugDeviceSessionContext extends GatewayDeviceSessionContext{
         log.trace("[{}] Received attributes update notification to sparkplug device", sessionId);
         notification.getSharedUpdatedList().forEach(tsKvProto -> {
             if (getDeviceBirthMetrics().containsKey(tsKvProto.getKv().getKey())) {
-                SparkplugTopic sparkplugTopic = new SparkplugTopic(((SparkplugNodeSessionHandler)parent).getSparkplugTopicNode(),
+                SparkplugTopic sparkplugTopic = new SparkplugTopic(parent.getSparkplugTopicNode(),
                         SparkplugMessageType.DCMD, deviceInfo.getDeviceName());
-                ((SparkplugNodeSessionHandler)parent).createSparkplugMqttPublishMsg(tsKvProto,
+                parent.createSparkplugMqttPublishMsg(tsKvProto,
                         sparkplugTopic.toString(),
                         getDeviceBirthMetrics().get(tsKvProto.getKv().getKey()))
-                        .ifPresent(parent::writeAndFlush);
+                        .ifPresent(this.parent::writeAndFlush);
             }
         });
     }
diff --git a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugNodeSessionHandler.java b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugNodeSessionHandler.java
index a43e64be0d..ef10c3234e 100644
--- a/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugNodeSessionHandler.java
+++ b/common/transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/SparkplugNodeSessionHandler.java
@@ -31,6 +31,7 @@ import org.thingsboard.server.common.data.exception.ThingsboardException;
 import org.thingsboard.server.common.transport.adaptor.AdaptorException;
 import org.thingsboard.server.common.transport.adaptor.JsonConverter;
 import org.thingsboard.server.common.transport.adaptor.ProtoConverter;
+import org.thingsboard.server.common.transport.auth.GetOrCreateDeviceFromGatewayResponse;
 import org.thingsboard.server.gen.transport.TransportProtos;
 import org.thingsboard.server.gen.transport.mqtt.SparkplugBProto;
 import org.thingsboard.server.transport.mqtt.MqttTransportHandler;
@@ -149,22 +150,11 @@ public class SparkplugNodeSessionHandler extends AbstractGatewaySessionHandler {
             // SUBSCRIBE Node
             parent.processAttributesSubscribe(grantedQoSList, MqttTopics.DEVICE_ATTRIBUTES_TOPIC, reqQoS, TopicType.V1);
         } else {
-            // SUBSCRIBE Device
-            onSparkplugDeviceSubscribe(grantedQoSList, MqttTopics.DEVICE_ATTRIBUTES_TOPIC, reqQoS, TopicType.V1, sparkplugTopic.getDeviceId());
+            // SUBSCRIBE Device - DO NOTHING, WE HAVE ALREADY SUBSCRIBED.
+            // TODO: track that node subscribed to # or to particular device.
         }
     }
 
-    public void onSparkplugDeviceSubscribe(List<Integer> grantedQoSList, String topic,
-                                           MqttQoS reqQoS, TopicType topicType,  String deviceName)
-            throws AdaptorException, ThingsboardException, ExecutionException, InterruptedException {
-        checkDeviceName(deviceName);
-        ListenableFuture<MqttDeviceAwareSessionContext> contextListenableFuture = onDeviceConnectProto(deviceName);
-        parent.transportService.process(contextListenableFuture.get().getSessionInfo(),
-                TransportProtos.SubscribeToAttributeUpdatesMsg.newBuilder().build(), null);
-        parent.attrSubTopicType = topicType;
-        parent.registerSubQoS(topic, grantedQoSList, reqQoS);
-    }
-
     public void onDeviceDisconnect(MqttPublishMessage mqttMsg, String deviceName) throws AdaptorException {
         try {
             processOnDisconnect(mqttMsg, deviceName);
@@ -253,4 +243,9 @@ public class SparkplugNodeSessionHandler extends AbstractGatewaySessionHandler {
         return Optional.empty();
     }
 
+    @Override
+    protected SparkplugDeviceSessionContext newDeviceSessionCtx(GetOrCreateDeviceFromGatewayResponse msg) {
+        return new SparkplugDeviceSessionContext(this, msg.getDeviceInfo(), msg.getDeviceProfile(), mqttQoSMap, transportService);
+    }
+
 }