diff --git a/ecs/crm-datafetch/tests/test_backup_crm_csv_data_process.py b/ecs/crm-datafetch/tests/test_backup_crm_csv_data_process.py
index 452f01b8..d66fe2de 100644
--- a/ecs/crm-datafetch/tests/test_backup_crm_csv_data_process.py
+++ b/ecs/crm-datafetch/tests/test_backup_crm_csv_data_process.py
@@ -153,17 +153,69 @@ class TestBackupCrmCsvDataProcess:
         execute_datetime = ExecuteDateTime()
         target_object = TargetObject(target_object_dict, execute_datetime)
 
-        with patch('src.backup_crm_csv_data_process.BackupBucket') as mock_backup_bucket:
+        with patch('src.backup_crm_csv_data_process.BackupBucket') as mock_backup_bucket, \
+                patch('src.backup_crm_csv_data_process.CsvWriter') as mock_writer:
             mock_backup_bucket_inst = mock_backup_bucket.return_value
             mock_backup_bucket_inst.put_csv.side_effect = Exception('登録エラー')
+
+            mock_writer_inst = mock_writer.return_value
+            mock_writer_inst.write.return_value = ''
             # Act
             with pytest.raises(FileUploadException) as e:
                 backup_crm_csv_data_process(target_object, execute_datetime, '')
 
         # Assert
 
+        assert mock_writer_inst.write.called is True
         assert mock_backup_bucket_inst.put_csv.called is True
         assert e.value.error_id == 'E-CSVBK-01'
         assert e.value.func_name == CSVBK_JP_NAME
         assert e.value.args[0] == \
             f'[Account] CSVデータのバックアップに失敗しました ファイル名：[CRM_Account_{execute_datetime.format_date()}.csv] エラー内容:[登録エラー]'
+
+    def test_raise_put_csv_write_local_file(self, bucket_name, monkeypatch, caplog):
+        """
+        Cases:
+            CSVデータをバックアップするための一時ファイルを書き込めない場合、エラーが発生すること
+        Arranges:
+            - オブジェクト情報ファイル取得処理で例外が発生するようにする
+        Expects:
+            - 例外が発生する
+            - ファイルが書き込めないエラーが返却される
+        """
+
+        # Arrange
+        target_object_dict = {
+            'object_name': 'Account',
+            'columns': [
+                'Id',
+                'AccountNumber',
+                'LastModifiedDate',
+                'LastModifiedById',
+                'SystemModstamp',
+                'IsDeleted'
+            ]
+        }
+
+        execute_datetime = ExecuteDateTime()
+        target_object = TargetObject(target_object_dict, execute_datetime)
+
+        with patch('src.backup_crm_csv_data_process.BackupBucket') as mock_backup_bucket, \
+                patch('src.backup_crm_csv_data_process.CsvWriter') as mock_writer:
+            mock_backup_bucket_inst = mock_backup_bucket.return_value
+            mock_backup_bucket_inst.put_csv.return_value = ''
+
+            mock_writer_inst = mock_writer.return_value
+            mock_writer_inst.write.side_effect = Exception('書き込みエラー')
+            # Act
+            with pytest.raises(FileUploadException) as e:
+                backup_crm_csv_data_process(target_object, execute_datetime, '')
+
+        # Assert
+
+        assert mock_writer_inst.write.called is True
+        assert mock_backup_bucket_inst.put_response_json.called is False
+        assert e.value.error_id == 'E-CSVBK-01'
+        assert e.value.func_name == CSVBK_JP_NAME
+        assert e.value.args[0] == \
+            f'[Account] CSVデータのバックアップに失敗しました ファイル名：[CRM_Account_{execute_datetime.format_date()}.csv] エラー内容:[書き込みエラー]'
diff --git a/ecs/crm-datafetch/tests/test_backup_crm_data_process.py b/ecs/crm-datafetch/tests/test_backup_crm_data_process.py
index 875e84ce..e98dd301 100644
--- a/ecs/crm-datafetch/tests/test_backup_crm_data_process.py
+++ b/ecs/crm-datafetch/tests/test_backup_crm_data_process.py
@@ -145,8 +145,8 @@ class TestBackupCrmDataProcess:
 
         # Assert
 
-        assert mock_backup_bucket_inst.put_response_json.called is True
         assert mock_writer_inst.write.called is True
+        assert mock_backup_bucket_inst.put_response_json.called is True
 
     def test_raise_put_response_json(self, bucket_name, monkeypatch, caplog):
         """
@@ -175,17 +175,69 @@ class TestBackupCrmDataProcess:
         execute_datetime = ExecuteDateTime()
         target_object = TargetObject(target_object_dict, execute_datetime)
 
-        with patch('src.backup_crm_data_process.BackupBucket') as mock_backup_bucket:
+        with patch('src.backup_crm_data_process.BackupBucket') as mock_backup_bucket, \
+                patch('src.backup_crm_data_process.JsonWriter') as mock_writer:
             mock_backup_bucket_inst = mock_backup_bucket.return_value
             mock_backup_bucket_inst.put_response_json.side_effect = Exception('登録エラー')
+
+            mock_writer_inst = mock_writer.return_value
+            mock_writer_inst.write.return_value = ''
             # Act
             with pytest.raises(FileUploadException) as e:
                 backup_crm_data_process(target_object, {}, execute_datetime)
 
         # Assert
 
+        assert mock_writer_inst.write.called is True
         assert mock_backup_bucket_inst.put_response_json.called is True
         assert e.value.error_id == 'E-RESBK-01'
         assert e.value.func_name == RESBK_JP_NAME
         assert e.value.args[0] == \
             f'[Account] 電文データのバックアップに失敗しました ファイル名：[CRM_Account_{execute_datetime.format_date()}.json] エラー内容:[登録エラー]'
+
+    def test_raise_put_response_json_write_local_file(self, bucket_name, monkeypatch, caplog):
+        """
+        Cases:
+            CRM電文データをS3に配置するための一時ファイルを書き込めない場合、エラーが発生すること
+        Arranges:
+            - オブジェクト情報ファイル取得処理で例外が発生するようにする
+        Expects:
+            - 例外が発生する
+            - ファイルが書き込めないエラーが返却される
+        """
+
+        # Arrange
+        target_object_dict = {
+            'object_name': 'Account',
+            'columns': [
+                'Id',
+                'AccountNumber',
+                'LastModifiedDate',
+                'LastModifiedById',
+                'SystemModstamp',
+                'IsDeleted'
+            ]
+        }
+
+        execute_datetime = ExecuteDateTime()
+        target_object = TargetObject(target_object_dict, execute_datetime)
+
+        with patch('src.backup_crm_data_process.BackupBucket') as mock_backup_bucket, \
+                patch('src.backup_crm_data_process.JsonWriter') as mock_writer:
+            mock_backup_bucket_inst = mock_backup_bucket.return_value
+            mock_backup_bucket_inst.put_response_json.return_value = ''
+
+            mock_writer_inst = mock_writer.return_value
+            mock_writer_inst.write.side_effect = Exception('書き込みエラー')
+            # Act
+            with pytest.raises(FileUploadException) as e:
+                backup_crm_data_process(target_object, {}, execute_datetime)
+
+        # Assert
+
+        assert mock_writer_inst.write.called is True
+        assert mock_backup_bucket_inst.put_response_json.called is False
+        assert e.value.error_id == 'E-RESBK-01'
+        assert e.value.func_name == RESBK_JP_NAME
+        assert e.value.args[0] == \
+            f'[Account] 電文データのバックアップに失敗しました ファイル名：[CRM_Account_{execute_datetime.format_date()}.json] エラー内容:[書き込みエラー]'