Minor refactoring

@@ -103,7 +103,6 @@ public class AdminController extends BaseController {
             } else if (adminSettings.getKey().equals("sms")) {
                 smsService.updateSmsConfiguration();
             }
-
             return adminSettings;
         } catch (Exception e) {
             throw handleException(e);

@@ -37,7 +37,6 @@ import org.thingsboard.server.common.data.relation.EntityRelation;
 import org.thingsboard.server.common.data.relation.EntityRelationInfo;
 import org.thingsboard.server.common.data.relation.EntityRelationsQuery;
 import org.thingsboard.server.common.data.relation.RelationTypeGroup;
-import org.thingsboard.server.dao.service.ConstraintValidator;
 import org.thingsboard.server.queue.util.TbCoreComponent;
 import org.thingsboard.server.service.security.permission.Operation;
 
@@ -85,7 +84,6 @@ public class EntityRelationController extends BaseController {
             if (relation.getTypeGroup() == null) {
                 relation.setTypeGroup(RelationTypeGroup.COMMON);
             }
-            ConstraintValidator.validateFields(relation);
             relationService.saveRelation(getTenantId(), relation);
 
             logEntityAction(relation.getFrom(), null, getCurrentUser().getCustomerId(),

@@ -95,6 +95,7 @@ public class ThingsboardErrorResponseHandler extends ResponseEntityExceptionHand
         }
     }
 
+
     private void handleThingsboardException(ThingsboardException thingsboardException, HttpServletResponse response) throws IOException {
 
         ThingsboardErrorCode errorCode = thingsboardException.getErrorCode();

@@ -41,6 +41,7 @@ import org.thingsboard.server.common.data.relation.RelationTypeGroup;
 import org.thingsboard.server.common.data.relation.RelationsSearchParameters;
 import org.thingsboard.server.dao.entity.EntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
+import org.thingsboard.server.dao.service.ConstraintValidator;
 
 import javax.annotation.Nullable;
 import java.util.ArrayList;
@@ -559,6 +560,7 @@ public class BaseRelationService implements RelationService {
         if (relation == null) {
             throw new DataValidationException("Relation type should be specified!");
         }
+        ConstraintValidator.validateFields(relation);
         validate(relation.getFrom(), relation.getTo(), relation.getType(), relation.getTypeGroup());
     }