diff --git a/application/src/main/java/org/thingsboard/server/controller/BaseController.java b/application/src/main/java/org/thingsboard/server/controller/BaseController.java
index f59da56d16..604a358305 100644
--- a/application/src/main/java/org/thingsboard/server/controller/BaseController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/BaseController.java
@@ -84,7 +84,6 @@ import org.thingsboard.server.common.data.page.SortOrder;
 import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.common.data.plugin.ComponentDescriptor;
 import org.thingsboard.server.common.data.plugin.ComponentType;
-import org.thingsboard.server.common.data.relation.EntityRelation;
 import org.thingsboard.server.common.data.rpc.Rpc;
 import org.thingsboard.server.common.data.rule.RuleChain;
 import org.thingsboard.server.common.data.rule.RuleChainType;
@@ -840,45 +839,14 @@ public abstract class BaseController {
         return null;
     }
 
-    protected void sendRelationNotificationMsg(TenantId tenantId, EntityRelation relation, EdgeEventActionType action) {
-        try {
-            if (!relation.getFrom().getEntityType().equals(EntityType.EDGE) &&
-                    !relation.getTo().getEntityType().equals(EntityType.EDGE)) {
-                sendNotificationMsgToEdge(tenantId, null, null, json.writeValueAsString(relation), EdgeEventType.RELATION, action);
-            }
-        } catch (Exception e) {
-            log.warn("Failed to push relation to core: {}", relation, e);
-        }
-    }
-
     protected void sendDeleteNotificationMsg(TenantId tenantId, EntityId entityId, List<EdgeId> edgeIds) {
-        sendDeleteNotificationMsg(tenantId, entityId, edgeIds, null);
-    }
-
-    protected void sendDeleteNotificationMsg(TenantId tenantId, EntityId entityId, List<EdgeId> edgeIds, String body) {
         if (edgeIds != null && !edgeIds.isEmpty()) {
             for (EdgeId edgeId : edgeIds) {
-                sendNotificationMsgToEdge(tenantId, edgeId, entityId, body, null, EdgeEventActionType.DELETED);
+                sendNotificationMsgToEdge(tenantId, edgeId, entityId, null, null, EdgeEventActionType.DELETED);
             }
         }
     }
 
-    protected void sendAlarmDeleteNotificationMsg(TenantId tenantId, EntityId entityId, List<EdgeId> edgeIds, Alarm alarm) {
-        try {
-            sendDeleteNotificationMsg(tenantId, entityId, edgeIds, json.writeValueAsString(alarm));
-        } catch (Exception e) {
-            log.warn("Failed to push delete alarm msg to core: {}", alarm, e);
-        }
-    }
-
-    protected void sendEntityAssignToCustomerNotificationMsg(TenantId tenantId, EntityId entityId, CustomerId customerId, EdgeEventActionType action) {
-        try {
-            sendNotificationMsgToEdge(tenantId, null, entityId, json.writeValueAsString(customerId), null, action);
-        } catch (Exception e) {
-            log.warn("Failed to push assign/unassign to/from customer to core: {}", customerId, e);
-        }
-    }
-
     protected void sendEntityNotificationMsg(TenantId tenantId, EntityId entityId, EdgeEventActionType action) {
         sendNotificationMsgToEdge(tenantId, null, entityId, null, null, action);
     }
diff --git a/application/src/main/java/org/thingsboard/server/service/entitiy/DefaultTbNotificationEntityService.java b/application/src/main/java/org/thingsboard/server/service/entitiy/DefaultTbNotificationEntityService.java
index f00a18917c..3799dc4093 100644
--- a/application/src/main/java/org/thingsboard/server/service/entitiy/DefaultTbNotificationEntityService.java
+++ b/application/src/main/java/org/thingsboard/server/service/entitiy/DefaultTbNotificationEntityService.java
@@ -261,7 +261,7 @@ public class DefaultTbNotificationEntityService implements TbNotificationEntityS
         }
     }
 
-    protected void sendAlarmDeleteNotificationMsg(TenantId tenantId, Alarm alarm, List<EdgeId> edgeIds, String body) {
+    private void sendAlarmDeleteNotificationMsg(TenantId tenantId, Alarm alarm, List<EdgeId> edgeIds, String body) {
         try {
             sendDeleteNotificationMsg(tenantId, alarm.getId(), edgeIds, body);
         } catch (Exception e) {
@@ -269,8 +269,7 @@ public class DefaultTbNotificationEntityService implements TbNotificationEntityS
         }
     }
 
-    protected <E extends HasName, I extends EntityId> void sendDeleteNotificationMsg(TenantId tenantId, I entityId, E entity,
-                                                                                     List<EdgeId> edgeIds) {
+    private <E extends HasName, I extends EntityId> void sendDeleteNotificationMsg(TenantId tenantId, I entityId, E entity, List<EdgeId> edgeIds) {
         try {
             sendDeleteNotificationMsg(tenantId, entityId, edgeIds, null);
         } catch (Exception e) {