diff --git a/nannyml/config.py b/nannyml/config.py
index 2e8e4743..170d86e8 100644
--- a/nannyml/config.py
+++ b/nannyml/config.py
@@ -88,11 +88,11 @@ def _parse_thresholds(cls, value: Dict[str, Any]):
 
 
 class Config(BaseModel):
-    input: Optional[InputConfig]
+    input: Optional[InputConfig] = None
     calculators: List[CalculatorConfig]
-    scheduling: Optional[SchedulingConfig]
+    scheduling: Optional[SchedulingConfig] = None
 
-    ignore_errors: Optional[bool]
+    ignore_errors: Optional[bool] = None
 
     @classmethod
     @lru_cache(maxsize=1)
diff --git a/nannyml/io/db/entities.py b/nannyml/io/db/entities.py
index f282b31e..7800beac 100644
--- a/nannyml/io/db/entities.py
+++ b/nannyml/io/db/entities.py
@@ -11,6 +11,7 @@
 from datetime import datetime
 from typing import List, Optional
 
+from pydantic import ConfigDict
 from sqlmodel import Field, Relationship, SQLModel
 
 
@@ -42,6 +43,11 @@ class Run(SQLModel, table=True):  # type: ignore[call-arg]
     Stored in the ``run`` table.
     """
 
+    # Ignore clash of `model_id` field name with default protected namespace `model_`
+    # See: https://github.com/pydantic/pydantic/discussions/7121
+    # Better solution using `alias` is not possible due to SQLModel issue
+    model_config = ConfigDict(protected_namespaces=())
+
     #: Foreign key in all ``metric`` tables
     id: Optional[int] = Field(default=None, primary_key=True)
 
@@ -61,6 +67,11 @@ class Metric(SQLModel):
     Base ``Metric`` definition.
     """
 
+    # Ignore clash of `model_id` field name with default protected namespace `model_`
+    # See: https://github.com/pydantic/pydantic/discussions/7121
+    # Better solution using `alias` is not possible due to SQLModel issue
+    model_config = ConfigDict(protected_namespaces=())
+
     #: The technical identifier for this database row
     id: Optional[int] = Field(default=None, primary_key=True)