diff --git a/src/iam/schemas.py b/src/iam/schemas.py
index 3fcd448..3650dbc 100644
--- a/src/iam/schemas.py
+++ b/src/iam/schemas.py
@@ -33,10 +33,10 @@ class GroupSchema(CustomBaseModel):
 	name: str
 
 class GroupIDMixin(CustomBaseModel):
-	group_id: int
+	group_id: int = Field(gt=0)
 
 class PermIDMixin(CustomBaseModel):
-	permission_id: int
+	permission_id: int = Field(gt=0)
 
 class IAMGetGroupPermissionsResponse(CustomBaseModel):
 	permissions: list[PermissionSchema]