diff --git a/csst_dfs_commons/models/common.py b/csst_dfs_commons/models/common.py
index 64ca1aca5396c3adf7261042676e0e8eef74ac38..84e5e62384dc25ccd6d308f55b4938b36dc2dd82 100644
--- a/csst_dfs_commons/models/common.py
+++ b/csst_dfs_commons/models/common.py
@@ -21,6 +21,8 @@ class BaseModel:
         return self
 
     def from_proto_model(self, record):
+        if record is None:
+            return None
         for k in self.__dataclass_fields__.keys():
             self.__setattr__(k, record.__getattribute__(k))
         return self
diff --git a/csst_dfs_commons/models/facility.py b/csst_dfs_commons/models/facility.py
index 26059869ed8afede65f0ba155e455d3714c108d2..ce1aa86f75bc384ae4d02b5330032fb2865e2616 100644
--- a/csst_dfs_commons/models/facility.py
+++ b/csst_dfs_commons/models/facility.py
@@ -39,21 +39,21 @@ class DetectorStatus(BaseModel):
 
 @dataclasses.dataclass
 class Brick(BaseModel):
-    id: int = 0
+    id: int = -1
     ra: float = 0.0
     dec: float = 0.0
     boundingbox: str=""
 
 @dataclasses.dataclass
 class BrickObsStatus(BaseModel):
-    brick_id: int = 0
+    brick_id: int = -1
     band: str=""
     cover_num: int = 0
     update_time: str=""
 
 @dataclasses.dataclass
 class BrickLevel1(BaseModel):
-    brick_id: int = 0
+    brick_id: int = -1
     level1_id: int = 0
     obs_id: str=""
     module: str=""
@@ -83,7 +83,7 @@ class Level2ProducerRuning(BaseModel):
     id: int = 0
     job_id: int = 0
     producer_id: int = 0
-    brick_id: int = 0
+    brick_id: int = -1
     start_time: str=""
     end_time: str=""
     prc_status: int = 0