diff --git a/sql_models.py b/sql_models.py
index 4c871c2..7cfbaeb 100644
--- a/sql_models.py
+++ b/sql_models.py
@@ -41,7 +41,7 @@ class Sale(SQLModel, table=True):
     cost: float
     crediting: float  # сколько начислено за продажу
     ref: int = Field(foreign_key="ref.id")
-    sale_id: str
+    sale_id: str 
     company_id: int = Field(foreign_key="company.id")
     sale_dttm: datetime = Field(default_factory=datetime.utcnow)
     create_dttm: datetime = Field(default_factory=datetime.utcnow)
@@ -53,7 +53,7 @@ class AgentTransaction(SQLModel, table=True):
     tg_agent_id: int = Field(foreign_key="tgagent.id")
     amount: float
     status: str
-    transaction_group: uuid.UUID = Field(default_factory=uuid.uuid4)
+    transaction_group: uuid.UUID = Field(default_factory=uuid.uuid4, unique=True)
     create_dttm: datetime = Field(default_factory=datetime.utcnow)
     update_dttm: datetime = Field(default_factory=datetime.utcnow)
 
@@ -64,7 +64,7 @@ class PartnerTransaction(SQLModel, table=True):
     type: str
     amount: float
     status: str
-    transaction_group: uuid.UUID
+    transaction_group: uuid.UUID 
     agent_transaction_id: Optional[int] = Field(default=None, foreign_key="agent_transactions.id")
     create_dttm: datetime = Field(default_factory=datetime.utcnow)
     update_dttm: datetime = Field(default_factory=datetime.utcnow)