thingsboard-developers

diff --git a/application/src/main/java/org/thingsboard/server/controller/DeviceController.java b/application/src/main/java/org/thingsboard/server/controller/DeviceController.java
index b9a8551..aef78f8 100644
--- a/application/src/main/java/org/thingsboard/server/controller/DeviceController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/DeviceController.java
@@ -220,7 +220,7 @@ public class DeviceController extends BaseController {
         checkParameter(DEVICE_ID, strDeviceId);
         try {
             DeviceId deviceId = new DeviceId(toUUID(strDeviceId));
-            Device device = checkDeviceId(deviceId, Operation.READ);
+            Device device = checkDeviceId(deviceId, Operation.READ_CREDENTIALS);
             DeviceCredentials deviceCredentials = checkNotNull(deviceCredentialsService.findDeviceCredentialsByDeviceId(getCurrentUser().getTenantId(), deviceId));
             logEntityAction(deviceId, device,
                     device.getCustomerId(),
@@ -240,7 +240,7 @@ public class DeviceController extends BaseController {
     public DeviceCredentials saveDeviceCredentials(@RequestBody DeviceCredentials deviceCredentials) throws ThingsboardException {
         checkNotNull(deviceCredentials);
         try {
-            Device device = checkDeviceId(deviceCredentials.getDeviceId(), Operation.WRITE);
+            Device device = checkDeviceId(deviceCredentials.getDeviceId(), Operation.WRITE_CREDENTIALS);
             DeviceCredentials result = checkNotNull(deviceCredentialsService.updateDeviceCredentials(getCurrentUser().getTenantId(), deviceCredentials));
             actorService.onCredentialsUpdate(getCurrentUser().getTenantId(), deviceCredentials.getDeviceId());
             logEntityAction(device.getId(), device,

diff --git a/application/src/main/java/org/thingsboard/server/service/security/permission/CustomerUserPremissions.java b/application/src/main/java/org/thingsboard/server/service/security/permission/CustomerUserPremissions.java
index d6b5d97..0bbb4d8 100644
--- a/application/src/main/java/org/thingsboard/server/service/security/permission/CustomerUserPremissions.java
+++ b/application/src/main/java/org/thingsboard/server/service/security/permission/CustomerUserPremissions.java
@@ -43,7 +43,7 @@ public class CustomerUserPremissions extends AbstractPermissions {
     }
 
     private static final PermissionChecker customerEntityPermissionChecker =
-            new PermissionChecker.GenericPermissionChecker(Operation.READ, Operation.READ_ATTRIBUTES, Operation.READ_TELEMETRY) {
+            new PermissionChecker.GenericPermissionChecker(Operation.READ, Operation.READ_CREDENTIALS, Operation.READ_ATTRIBUTES, Operation.READ_TELEMETRY) {
 
         @Override
         public boolean hasPermission(SecurityUser user, Operation operation, EntityId entityId, HasTenantId entity) {

diff --git a/application/src/main/java/org/thingsboard/server/service/security/permission/Operation.java b/application/src/main/java/org/thingsboard/server/service/security/permission/Operation.java
index e8ad7f0..da90092 100644
--- a/application/src/main/java/org/thingsboard/server/service/security/permission/Operation.java
+++ b/application/src/main/java/org/thingsboard/server/service/security/permission/Operation.java
@@ -18,6 +18,6 @@ package org.thingsboard.server.service.security.permission;
 public enum Operation {
 
     ALL, CREATE, READ, WRITE, DELETE, ASSIGN_TO_CUSTOMER, UNASSIGN_FROM_CUSTOMER, RPC_CALL,
-    READ_ATTRIBUTES, WRITE_ATTRIBUTES, READ_TELEMETRY, WRITE_TELEMETRY
+    READ_CREDENTIALS, WRITE_CREDENTIALS, READ_ATTRIBUTES, WRITE_ATTRIBUTES, READ_TELEMETRY, WRITE_TELEMETRY
 
 }