improvements

@@ -468,7 +468,7 @@ public class DefaultTransportApiService implements TransportApiService {
                 break;
         }
 
-        return DeviceInfoProto.newBuilder()
+        DeviceInfoProto.Builder builder = DeviceInfoProto.newBuilder()
                 .setTenantIdMSB(device.getTenantId().getId().getMostSignificantBits())
                 .setTenantIdLSB(device.getTenantId().getId().getLeastSignificantBits())
                 .setCustomerIdMSB(Optional.ofNullable(device.getCustomerId()).map(customerId -> customerId.getId().getMostSignificantBits()).orElse(0L))
@@ -479,9 +479,11 @@ public class DefaultTransportApiService implements TransportApiService {
                 .setDeviceType(device.getType())
                 .setDeviceProfileIdMSB(device.getDeviceProfileId().getId().getMostSignificantBits())
                 .setDeviceProfileIdLSB(device.getDeviceProfileId().getId().getLeastSignificantBits())
-                .setAdditionalInfo(mapper.writeValueAsString(device.getAdditionalInfo()))
-                .setPowerMode(powerMode != null ? powerMode.name() : null)
-                .build();
+                .setAdditionalInfo(mapper.writeValueAsString(device.getAdditionalInfo()));
+        if (powerMode != null) {
+            builder.setPowerMode(powerMode.name());
+        }
+        return builder.build();
     }
 
     private ListenableFuture<TransportApiResponseMsg> getEmptyTransportApiResponseFuture() {

@@ -42,6 +42,7 @@ import org.thingsboard.server.common.transport.util.SslUtil;
 import org.thingsboard.server.queue.util.TbLwM2mTransportComponent;
 import org.thingsboard.server.transport.lwm2m.config.LwM2MTransportServerConfig;
 import org.thingsboard.server.transport.lwm2m.secure.credentials.LwM2MCredentials;
+import org.thingsboard.server.transport.lwm2m.server.client.LwM2MAuthException;
 import org.thingsboard.server.transport.lwm2m.server.store.TbLwM2MDtlsSessionStore;
 import org.thingsboard.server.transport.lwm2m.server.store.TbMainSecurityStore;
 
@@ -118,7 +119,12 @@ public class TbLwM2MDtlsCertificateVerifier implements NewAdvancedCertificateVer
 
                         String strCert = SslUtil.getCertificateString(cert);
                         String sha3Hash = EncryptionUtil.getSha3Hash(strCert);
-                        TbLwM2MSecurityInfo securityInfo = securityInfoValidator.getEndpointSecurityInfoByCredentialsId(sha3Hash, CLIENT);
+                        TbLwM2MSecurityInfo securityInfo;
+                        try {
+                            securityInfo = securityInfoValidator.getEndpointSecurityInfoByCredentialsId(sha3Hash, CLIENT);
+                        } catch (LwM2MAuthException e) {
+                            securityInfo = null;
+                        }
                         ValidateDeviceCredentialsResponse msg = securityInfo != null ? securityInfo.getMsg() : null;
                         if (msg != null && org.thingsboard.server.common.data.StringUtils.isNotEmpty(msg.getCredentials())) {
                             LwM2MCredentials credentials = JacksonUtil.fromString(msg.getCredentials(), LwM2MCredentials.class);

@@ -34,6 +34,7 @@ import org.thingsboard.server.common.data.DeviceProfile;
 import org.thingsboard.server.common.data.DeviceTransportType;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.ResourceType;
+import org.thingsboard.server.common.data.StringUtils;
 import org.thingsboard.server.common.data.Tenant;
 import org.thingsboard.server.common.data.device.data.PowerMode;
 import org.thingsboard.server.common.data.id.CustomerId;
@@ -441,7 +442,7 @@ public class DefaultTransportService implements TransportService {
         tdi.setAdditionalInfo(di.getAdditionalInfo());
         tdi.setDeviceName(di.getDeviceName());
         tdi.setDeviceType(di.getDeviceType());
-        if (di.getPowerMode() != null) {
+        if (StringUtils.isNotEmpty(di.getPowerMode())) {
             tdi.setPowerMode(PowerMode.valueOf(di.getPowerMode()));
         }
         return tdi;