diff --git a/application/src/main/java/org/thingsboard/server/service/resource/DefaultTbResourceService.java b/application/src/main/java/org/thingsboard/server/service/resource/DefaultTbResourceService.java
index 15ca6d7be3..2cde0e2113 100644
--- a/application/src/main/java/org/thingsboard/server/service/resource/DefaultTbResourceService.java
+++ b/application/src/main/java/org/thingsboard/server/service/resource/DefaultTbResourceService.java
@@ -89,7 +89,7 @@ public class DefaultTbResourceService implements TbResourceService {
             } catch (InvalidDDFFileException | IOException e) {
                 throw new ThingsboardException(e, ThingsboardErrorCode.GENERAL);
             }
-            if (resource.getResourceType().equals(ResourceType.LWM2M_MODEL) && toLwM2mObject(resource) == null) {
+            if (resource.getResourceType().equals(ResourceType.LWM2M_MODEL) && toLwM2mObject(resource, true) == null) {
                 throw new DataValidationException(String.format("Could not parse the XML of objectModel with name %s", resource.getSearchText()));
             }
         } else {
@@ -131,7 +131,7 @@ public class DefaultTbResourceService implements TbResourceService {
         List<TbResource> resources = resourceService.findTenantResourcesByResourceTypeAndObjectIds(tenantId, ResourceType.LWM2M_MODEL,
                 objectIds);
         return resources.stream()
-                .flatMap(s -> Stream.ofNullable(toLwM2mObject(s)))
+                .flatMap(s -> Stream.ofNullable(toLwM2mObject(s, false)))
                 .sorted(getComparator(sortProperty, sortOrder))
                 .collect(Collectors.toList());
     }
@@ -142,7 +142,7 @@ public class DefaultTbResourceService implements TbResourceService {
         validateId(tenantId, INCORRECT_TENANT_ID + tenantId);
         PageData<TbResource> resourcePageData = resourceService.findTenantResourcesByResourceTypeAndPageLink(tenantId, ResourceType.LWM2M_MODEL, pageLink);
         return resourcePageData.getData().stream()
-                .flatMap(s -> Stream.ofNullable(toLwM2mObject(s)))
+                .flatMap(s -> Stream.ofNullable(toLwM2mObject(s, false)))
                 .sorted(getComparator(sortProperty, sortOrder))
                 .collect(Collectors.toList());
     }
@@ -167,7 +167,7 @@ public class DefaultTbResourceService implements TbResourceService {
         return "DESC".equals(sortOrder) ? comparator.reversed() : comparator;
     }
 
-    private LwM2mObject toLwM2mObject(TbResource resource) {
+    private LwM2mObject toLwM2mObject(TbResource resource, boolean isSave) {
         try {
             DDFFileParser ddfFileParser = new DDFFileParser(new DefaultDDFFileValidator());
             List<ObjectModel> objectModels =
@@ -186,12 +186,16 @@ public class DefaultTbResourceService implements TbResourceService {
                 instance.setId(0);
                 List<LwM2mResourceObserve> resources = new ArrayList<>();
                 obj.resources.forEach((k, v) -> {
-                    if (v.operations.isReadable()) {
+                    if (isSave) {
+                        LwM2mResourceObserve lwM2MResourceObserve = new LwM2mResourceObserve(k, v.name, false, false, false);
+                        resources.add(lwM2MResourceObserve);
+                    }
+                    else if (v.operations.isReadable()) {
                         LwM2mResourceObserve lwM2MResourceObserve = new LwM2mResourceObserve(k, v.name, false, false, false);
                         resources.add(lwM2MResourceObserve);
                     }
                 });
-                if (resources.size() > 0) {
+                if (isSave || resources.size() > 0) {
                     instance.setResources(resources.toArray(LwM2mResourceObserve[]::new));
                     lwM2mObject.setInstances(new LwM2mInstance[]{instance});
                     return lwM2mObject;
diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/LwM2mTransportRequest.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/LwM2mTransportRequest.java
index 425f1ee020..d2492ffa42 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/LwM2mTransportRequest.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/LwM2mTransportRequest.java
@@ -147,11 +147,15 @@ public class LwM2mTransportRequest {
                         }
                     }
                     else if (WRITE_UPDATE.name().equals(typeOper.name())) {
-                        Lwm2mClientRpcRequest rpcRequestClone = (Lwm2mClientRpcRequest) rpcRequest.clone();
-                        if (rpcRequestClone != null) {
+                        if (rpcRequest != null) {
                             String errorMsg = String.format("Path %s params is not valid", targetIdVer);
-                            serviceImpl.sentRpcRequest(rpcRequestClone, BAD_REQUEST.getName(), errorMsg, LOG_LW2M_ERROR);
-                            rpcRequest = null;
+                            serviceImpl.sentRpcRequest(rpcRequest, BAD_REQUEST.getName(), errorMsg, LOG_LW2M_ERROR);
+                        }
+                    }
+                    else if (WRITE_REPLACE.name().equals(typeOper.name()) || EXECUTE.name().equals(typeOper.name()) ) {
+                        if (rpcRequest != null) {
+                            String errorMsg = String.format("Path %s object model  is absent", targetIdVer);
+                            serviceImpl.sentRpcRequest(rpcRequest, BAD_REQUEST.getName(), errorMsg, LOG_LW2M_ERROR);
                         }
                     }
                     else if (!OBSERVE_CANCEL.name().equals(typeOper.name())) {
@@ -240,11 +244,13 @@ public class LwM2mTransportRequest {
                 this.afterObserveCancel(registration, observeCancelCnt, observeCancelMsg, rpcRequest);
                 break;
             case EXECUTE:
-                ResourceModel resourceModelExe = lwM2MClient.getResourceModel(targetIdVer, this.config.getModelProvider());
-                if (params != null && !resourceModelExe.multiple) {
-                    request = new ExecuteRequest(target, (String) this.converter.convertValue(params, resourceModelExe.type, ResourceModel.Type.STRING, resultIds));
-                } else {
-                    request = new ExecuteRequest(target);
+                ResourceModel resourceModelExecute = lwM2MClient.getResourceModel(targetIdVer, this.config.getModelProvider());
+                if (resourceModelExecute != null) {
+                    if (params != null && !resourceModelExecute.multiple) {
+                        request = new ExecuteRequest(target, (String) this.converter.convertValue(params, resourceModelExecute.type, ResourceModel.Type.STRING, resultIds));
+                    } else {
+                        request = new ExecuteRequest(target);
+                    }
                 }
                 break;
             case WRITE_REPLACE:
@@ -255,10 +261,12 @@ public class LwM2mTransportRequest {
                  * JSON, TEXT;
                  **/
                 ResourceModel resourceModelWrite = lwM2MClient.getResourceModel(targetIdVer, this.config.getModelProvider());
-                contentFormat = getContentFormatByResourceModelType(resourceModelWrite, contentFormat);
-                request = this.getWriteRequestSingleResource(contentFormat, resultIds.getObjectId(),
-                        resultIds.getObjectInstanceId(), resultIds.getResourceId(), params, resourceModelWrite.type,
-                        registration, rpcRequest);
+                if (resourceModelWrite != null) {
+                    contentFormat = getContentFormatByResourceModelType(resourceModelWrite, contentFormat);
+                    request = this.getWriteRequestSingleResource(contentFormat, resultIds.getObjectId(),
+                            resultIds.getObjectInstanceId(), resultIds.getResourceId(), params, resourceModelWrite.type,
+                            registration, rpcRequest);
+                }
                 break;
             case WRITE_UPDATE:
                 if (resultIds.isResource()) {
diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/Lwm2mClientRpcRequest.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/Lwm2mClientRpcRequest.java
index 77a26b4755..248d4ee733 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/Lwm2mClientRpcRequest.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/client/Lwm2mClientRpcRequest.java
@@ -109,14 +109,4 @@ public class Lwm2mClientRpcRequest {
                 .setRequestId(this.requestId)
                 .build();
     }
-
-    @Override
-    public Object clone() {
-        try {
-            return super.clone();
-        } catch (CloneNotSupportedException e) {
-            log.error("", e);
-        }
-        return null;
-    }
 }