diff --git a/clearing-parent/backend-api/src/main/java/ru/spcex/clearing/backendapi/service/UserAutoCreateService.java b/clearing-parent/backend-api/src/main/java/ru/spcex/clearing/backendapi/service/UserAutoCreateService.java
index 19e9e6ffb..fa8ad673b 100644
--- a/clearing-parent/backend-api/src/main/java/ru/spcex/clearing/backendapi/service/UserAutoCreateService.java
+++ b/clearing-parent/backend-api/src/main/java/ru/spcex/clearing/backendapi/service/UserAutoCreateService.java
@@ -1,17 +1,21 @@
 package ru.spcex.clearing.backendapi.service;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import ru.clearing.classes.statics.data.user.ClearingUser;
 import ru.spcex.clearing.imdg.IMDGDistributedNames;
 import ru.spcex.platform.imdg.api.Imdg;
 import ru.spcex.platform.imdg.api.ImdgProvider;
+import ru.spcex.platform.utils.log.ExceptionUtils;
 
 import java.time.Instant;
 import java.util.Map;
 
 @Service
 public class UserAutoCreateService {
+    private final Logger log = LoggerFactory.getLogger(getClass());
 
     private final Imdg<ClearingUser> userMap;
 
@@ -22,15 +26,20 @@ public class UserAutoCreateService {
 
     /**
      * при необходимости переделать на отдельный поток
-     * todo transactional?
      */
     public void createUserIfNeeded(String userName) {
-        ClearingUser username = userMap.getSingleObjectByFieldValues(Map.of("username", userName));
-        if (username == null) {
-            username = new ClearingUser();
-            username.setUsername(userName);
-            username.setCreated(Instant.now());
-            userMap.insert(username);
-        }
+        userMap.lockAndPerform(() -> {
+            try {
+                ClearingUser username = userMap.getSingleObjectByFieldValues(Map.of("username", userName));
+                if (username == null) {
+                    username = new ClearingUser();
+                    username.setUsername(userName);
+                    username.setCreated(Instant.now());
+                    userMap.insert(username);
+                }
+            } catch (Throwable e) {
+                log.error(ExceptionUtils.getStackTrace(e));
+            }
+        });
     }
 }
diff --git a/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/adapter/ImdgHazelcast.java b/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/adapter/ImdgHazelcast.java
index ab51b6132..c1e19049e 100644
--- a/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/adapter/ImdgHazelcast.java
+++ b/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/adapter/ImdgHazelcast.java
@@ -1,33 +1,27 @@
 package ru.spcex.platform.imdg.iml.hazelcast.adapter;
 
+import com.hazelcast.core.HazelcastInstance;
+import com.hazelcast.core.ILock;
 import com.hazelcast.core.IMap;
 import com.hazelcast.core.IdGenerator;
 import com.hazelcast.query.Predicate;
 import com.hazelcast.query.Predicates;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import ru.spcex.platform.classes.base.SpcexObjectBase;
 import ru.spcex.platform.imdg.api.Imdg;
+import ru.spcex.platform.utils.log.ExceptionUtils;
 
 import java.util.*;
 public class ImdgHazelcast<T extends SpcexObjectBase> implements Imdg<T> {
+    private final Logger log = LoggerFactory.getLogger(getClass());
     private IdGenerator idGenerator;
 
     private IMap<Long, T> map;
 
-    public IMap<Long, T> getMap() {
-        return map;
-    }
+    private String mapName;
 
-    public void setMap(IMap<Long, T> map) {
-        this.map = map;
-    }
-
-    public IdGenerator getIdGenerator() {
-        return idGenerator;
-    }
-
-    public void setIdGenerator(IdGenerator idGenerator) {
-        this.idGenerator = idGenerator;
-    }
+    private HazelcastInstance hzInstance;
 
     @Override
     public void insert(T paramT) {
@@ -35,6 +29,25 @@ public class ImdgHazelcast<T extends SpcexObjectBase> implements Imdg<T> {
         map.put(paramT.getId(), paramT);
     }
 
+    @Override
+    public void lockAndPerform(Runnable operation) {
+        ILock hzLock = null;
+        try {
+            //в качестве альтернативы getCPSubsystem, поддерживается только при 3+ нодах хазелкаста
+            hzLock = hzInstance.getLock(mapName);
+            hzLock.lock();
+            operation.run();
+        } finally {
+            if (hzLock != null) {
+                try {
+                    hzLock.unlock();
+                } catch (Throwable e) {
+                    log.error("{} {}", mapName, ExceptionUtils.getStackTrace(e));
+                }
+            }
+        }
+    }
+
     @Override
     public void update(T paramT) {
         map.put(paramT.getId(), paramT);
@@ -97,4 +110,36 @@ public class ImdgHazelcast<T extends SpcexObjectBase> implements Imdg<T> {
         }
         return searchResult;
     }
+
+    public IMap<Long, T> getMap() {
+        return map;
+    }
+
+    public void setMap(IMap<Long, T> map) {
+        this.map = map;
+    }
+
+    public IdGenerator getIdGenerator() {
+        return idGenerator;
+    }
+
+    public void setIdGenerator(IdGenerator idGenerator) {
+        this.idGenerator = idGenerator;
+    }
+
+    public HazelcastInstance getHzInstance() {
+        return hzInstance;
+    }
+
+    public void setHzInstance(HazelcastInstance hzInstance) {
+        this.hzInstance = hzInstance;
+    }
+
+    public String getMapName() {
+        return mapName;
+    }
+
+    public void setMapName(String mapName) {
+        this.mapName = mapName;
+    }
 }
diff --git a/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/service/HazelcastServiceBase.java b/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/service/HazelcastServiceBase.java
index f6d80b3ff..dcf70320b 100644
--- a/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/service/HazelcastServiceBase.java
+++ b/platform-parent/platform-imdg-api-hazelcast-impl/src/main/java/ru/spcex/platform/imdg/iml/hazelcast/service/HazelcastServiceBase.java
@@ -223,6 +223,8 @@ public abstract class HazelcastServiceBase
             public void getAvailable(HazelcastInstance hazelcastNotInited) {
                 IdGenerator generator = hazelcastInstance.getIdGenerator(IMDGDistributedNames.MAP_SEQUENCE_NAME);
                 imdg.setMap(hazelcastInstance.getMap(key));
+                imdg.setMapName(key);
+                imdg.setHzInstance(hazelcastInstance);
                 imdg.setIdGenerator(generator);
             }
 
diff --git a/platform-parent/platform-imdg-api/src/main/java/ru/spcex/platform/imdg/api/Imdg.java b/platform-parent/platform-imdg-api/src/main/java/ru/spcex/platform/imdg/api/Imdg.java
index 49b9ddf94..845eeb86f 100644
--- a/platform-parent/platform-imdg-api/src/main/java/ru/spcex/platform/imdg/api/Imdg.java
+++ b/platform-parent/platform-imdg-api/src/main/java/ru/spcex/platform/imdg/api/Imdg.java
@@ -10,6 +10,10 @@ public interface Imdg<T extends SpcexObjectBase> {
         throw new UnsupportedOperationException("not implemented insert");
     }
 
+    default void lockAndPerform(Runnable operation) {
+        throw new UnsupportedOperationException("not implemented lockAndPerform");
+    }
+
     default void update(T paramT) {
         throw new UnsupportedOperationException("not implemented update");
     }