diff --git a/backend_py/primary/primary/routers/well/converters.py b/backend_py/primary/primary/routers/well/converters.py
index baa9fbda1..0fc4f4606 100644
--- a/backend_py/primary/primary/routers/well/converters.py
+++ b/backend_py/primary/primary/routers/well/converters.py
@@ -62,7 +62,6 @@ def convert_wellbore_header_to_schema(
             drilled_wellbore_header.wellbore_purpose if drilled_wellbore_header.wellbore_purpose else ""
         ),  # TODO: Handle None
         wellboreStatus=drilled_wellbore_header.wellbore_status if drilled_wellbore_header.wellbore_status else "",
-        slotIdentifier=drilled_wellbore_header.slot_identifier if drilled_wellbore_header.slot_identifier else "",
     )
 
 
diff --git a/backend_py/primary/primary/routers/well/schemas.py b/backend_py/primary/primary/routers/well/schemas.py
index 8fb10c98f..5e47a71f8 100644
--- a/backend_py/primary/primary/routers/well/schemas.py
+++ b/backend_py/primary/primary/routers/well/schemas.py
@@ -34,7 +34,6 @@ class WellboreHeader(BaseModel):
     depthReferenceElevation: float
     wellborePurpose: str
     wellboreStatus: str
-    slotIdentifier: str
 
 
 class WellboreTrajectory(BaseModel):
diff --git a/backend_py/primary/primary/services/smda_access/smda_access.py b/backend_py/primary/primary/services/smda_access/smda_access.py
index d9e75cd30..221c44512 100644
--- a/backend_py/primary/primary/services/smda_access/smda_access.py
+++ b/backend_py/primary/primary/services/smda_access/smda_access.py
@@ -75,7 +75,7 @@ async def get_wellbore_headers(self) -> List[WellboreHeader]:
         if not survey_header_results:
             raise NoDataError(f"No wellbore headers found for {self._field_identifier=}.", Service.SMDA)
 
-        projection = ["unique_wellbore_identifier", "wellbore_purpose", "wellbore_status", "slot_identifier"]
+        projection = ["unique_wellbore_identifier", "wellbore_purpose", "wellbore_status"]
         params = {
             "_projection": ",".join(projection),
             "_sort": "unique_wellbore_identifier",
@@ -89,7 +89,6 @@ async def get_wellbore_headers(self) -> List[WellboreHeader]:
                 if survey_header["unique_wellbore_identifier"] == wellbore_header["unique_wellbore_identifier"]:
                     survey_header["wellbore_purpose"] = wellbore_header.get("wellbore_purpose")
                     survey_header["wellbore_status"] = wellbore_header.get("wellbore_status")
-                    survey_header["slot_identifier"] = wellbore_header.get("slot_identifier")
                     break
 
         return [WellboreHeader(**result) for result in survey_header_results]
diff --git a/backend_py/primary/primary/services/smda_access/types.py b/backend_py/primary/primary/services/smda_access/types.py
index eff556881..b9bdefa45 100644
--- a/backend_py/primary/primary/services/smda_access/types.py
+++ b/backend_py/primary/primary/services/smda_access/types.py
@@ -44,7 +44,6 @@ class WellboreHeader(BaseModel):
     depth_reference_elevation: float
     wellbore_purpose: str | None
     wellbore_status: str | None
-    slot_identifier: str | None
 
 
 class StratigraphicUnit(BaseModel):