diff --git a/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/callback/CoapEfentoCallback.java b/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/callback/CoapEfentoCallback.java
new file mode 100644
index 0000000000..f2387bf0d1
--- /dev/null
+++ b/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/callback/CoapEfentoCallback.java
@@ -0,0 +1,52 @@
+/**
+ * Copyright © 2016-2021 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.transport.coap.callback;
+
+import org.eclipse.californium.core.coap.CoAP;
+import org.eclipse.californium.core.coap.Response;
+import org.eclipse.californium.core.server.resources.CoapExchange;
+import org.thingsboard.server.common.transport.TransportServiceCallback;
+
+public class CoapEfentoCallback implements TransportServiceCallback<Void> {
+
+    protected final CoapExchange exchange;
+    protected final CoAP.ResponseCode onSuccessResponse;
+    protected final CoAP.ResponseCode onFailureResponse;
+
+    public CoapEfentoCallback(CoapExchange exchange, CoAP.ResponseCode onSuccessResponse, CoAP.ResponseCode onFailureResponse) {
+        this.exchange = exchange;
+        this.onSuccessResponse = onSuccessResponse;
+        this.onFailureResponse = onFailureResponse;
+    }
+
+    @Override
+    public void onSuccess(Void msg) {
+        if (isConRequest()) {
+            Response response = new Response(onSuccessResponse);
+            response.setAcknowledged(true);
+            exchange.respond(response);
+        }
+    }
+
+    @Override
+    public void onError(Throwable e) {
+        exchange.respond(onFailureResponse);
+    }
+
+    protected boolean isConRequest() {
+        return exchange.advanced().getRequest().isConfirmable();
+    }
+}
diff --git a/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/efento/CoapEfentoTransportResource.java b/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/efento/CoapEfentoTransportResource.java
index 59482d9fc2..06395109d1 100644
--- a/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/efento/CoapEfentoTransportResource.java
+++ b/common/transport/coap/src/main/java/org/thingsboard/server/transport/coap/efento/CoapEfentoTransportResource.java
@@ -21,6 +21,7 @@ import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 import org.eclipse.californium.core.coap.CoAP;
 import org.eclipse.californium.core.coap.Request;
+import org.eclipse.californium.core.coap.Response;
 import org.eclipse.californium.core.network.Exchange;
 import org.eclipse.californium.core.server.resources.CoapExchange;
 import org.eclipse.californium.core.server.resources.Resource;
@@ -38,6 +39,7 @@ import org.thingsboard.server.gen.transport.coap.MeasurementsProtos;
 import org.thingsboard.server.transport.coap.AbstractCoapTransportResource;
 import org.thingsboard.server.transport.coap.CoapTransportContext;
 import org.thingsboard.server.transport.coap.callback.CoapDeviceAuthCallback;
+import org.thingsboard.server.transport.coap.callback.CoapEfentoCallback;
 import org.thingsboard.server.transport.coap.callback.CoapOkCallback;
 import org.thingsboard.server.transport.coap.efento.utils.CoapEfentoUtils;
 
@@ -97,7 +99,11 @@ public class CoapEfentoTransportResource extends AbstractCoapTransportResource {
                 break;
             case DEVICE_INFO:
             case CONFIGURATION:
-                exchange.respond(CoAP.ResponseCode.CREATED);
+                Response response = new Response(CoAP.ResponseCode.CREATED);
+                if (exchange.advanced().getRequest().isConfirmable()) {
+                    response.setAcknowledged(true);
+                    exchange.respond(response);
+                }
                 break;
             default:
                 exchange.respond(CoAP.ResponseCode.BAD_REQUEST);
@@ -120,7 +126,7 @@ public class CoapEfentoTransportResource extends AbstractCoapTransportResource {
                             List<EfentoMeasurements> efentoMeasurements = getEfentoMeasurements(protoMeasurements, sessionId);
                             transportService.process(sessionInfo,
                                     transportContext.getEfentoCoapAdaptor().convertToPostTelemetry(sessionId, efentoMeasurements),
-                                    new CoapOkCallback(exchange, CoAP.ResponseCode.CREATED, CoAP.ResponseCode.INTERNAL_SERVER_ERROR));
+                                    new CoapEfentoCallback(exchange, CoAP.ResponseCode.CREATED, CoAP.ResponseCode.INTERNAL_SERVER_ERROR));
                             reportSubscriptionInfo(sessionInfo, false, false);
                         } catch (AdaptorException e) {
                             log.error("[{}] Failed to decode Efento ProtoMeasurements: ", sessionId, e);