diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 60569ab0..6b0f42fa 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,3 +1,7 @@
+0.1.5
+-------------------
+Fixing issues with `create_tasks` and `create_task_suites`
+
 0.1.4
 -------------------
 * Implemented a `clone_project` method
diff --git a/src/client/__init__.py b/src/client/__init__.py
index a1e10851..2c670a41 100644
--- a/src/client/__init__.py
+++ b/src/client/__init__.py
@@ -134,8 +134,8 @@ def _synch_via_asynch(self, objects, parameters, url, result_type, operation_typ
         # Emulates synchronous operation, through asynchronous calls and reading operation logs.
         client_uuid_to_index = {}
         for i, obj in enumerate(objects):
-            obj.__client_uuid = uuid.uuid4().hex
-            client_uuid_to_index[obj.__client_uuid] = str(i)
+            obj._unexpected['__client_uuid'] = uuid.uuid4().hex
+            client_uuid_to_index[obj._unexpected['__client_uuid']] = str(i)
 
         response = self._request('post', url, json=unstructure(objects), params=unstructure(parameters))
         insert_operation = structure(response, operation_type)
@@ -146,6 +146,8 @@ def _synch_via_asynch(self, objects, parameters, url, result_type, operation_typ
         validation_errors = {}
 
         for log_item in self.get_operation_log(insert_operation.id):
+            if log_item.type not in ['TASK_CREATE', 'TASK_VALIDATE', 'TASK_SUITE_VALIDATE', 'TASK_SUITE_CREATE']:
+                continue
             index = client_uuid_to_index[log_item.input['__client_uuid']]
             if log_item.success:
                 numerated_ids = pools.setdefault(log_item.input['pool_id'], {})
diff --git a/src/client/__version__.py b/src/client/__version__.py
index a7a1e8c5..ffb12cf5 100644
--- a/src/client/__version__.py
+++ b/src/client/__version__.py
@@ -1,3 +1,3 @@
 __title__ = 'toloka-kit'
-__version__ = '0.1.4'
+__version__ = '0.1.5'
 __license__ = 'Apache 2.0'
diff --git a/tests/test_task.py b/tests/test_task.py
index a5b3e47c..d18d25e4 100644
--- a/tests/test_task.py
+++ b/tests/test_task.py
@@ -258,7 +258,8 @@ def check_tasks(request, context):
         } == parse_qs(urlparse(request.url).query)
         imcoming_tasks = []
         for t in request.json():
-            t.pop('__client_uuid', '')
+            assert '__client_uuid' in t
+            t.pop('__client_uuid')
             imcoming_tasks.append(t)
         assert tasks_map == imcoming_tasks
         return operation_running_map
diff --git a/tests/test_task_suite.py b/tests/test_task_suite.py
index ab5b513e..67868e8f 100644
--- a/tests/test_task_suite.py
+++ b/tests/test_task_suite.py
@@ -235,7 +235,8 @@ def check_task_suites(request, context):
         } == parse_qs(urlparse(request.url).query)
         imcoming_task_suites = []
         for t in request.json():
-            t.pop('__client_uuid', '')
+            assert '__client_uuid' in t
+            t.pop('__client_uuid')
             imcoming_task_suites.append(t)
         assert task_suites_map == imcoming_task_suites
         return operation_running_map