ENH: Set Region required in inplace_volumes

src/fmu/dataio/_products/inplace_volumes.py

@@ -27,7 +27,7 @@ class InplaceVolumesResultRow(BaseModel):
 
     FLUID: InplaceVolumes.Fluid
     ZONE: str
-    REGION: Optional[str] = Field(default=None)
+    REGION: str
     FACIES: Optional[str] = Field(default=None)
     LICENSE: Optional[str] = Field(default=None)
 

src/fmu/dataio/export/_enums.py

@@ -48,6 +48,7 @@ def required_index_columns() -> list[str]:
         return [
             InplaceVolumes.TableIndexColumns.FLUID.value,
             InplaceVolumes.TableIndexColumns.ZONE.value,
+            InplaceVolumes.TableIndexColumns.REGION.value,
         ]
 
     @staticmethod

src/fmu/dataio/export/rms/inplace_volumes.py

@@ -240,10 +240,19 @@ def _is_column_missing_in_table(self, column: str) -> bool:
     def _validate_table(self) -> None:
         """
         Validate that the final table with volumes is according to the standard
-        defined for the inplace_volumes product.
+        defined for the inplace_volumes product. The table should have the required
+        index and value columns, and at least one of the main types 'oil' or 'gas'.
         """
         _logger.debug("Validating the dataframe...")
 
+        # check that all required index columns are present
+        for col in _enums.InplaceVolumes.required_index_columns():
+            if self._is_column_missing_in_table(col):
+                raise RuntimeError(
+                    f"Required index column {col} is missing in the volumetric table. "
+                    "Please update and rerun the volumetric job before export."
+                )
+
         has_oil = (
             "oil" in self._dataframe[_enums.InplaceVolumes.FLUID_COLUMN.value].values
         )
@@ -259,7 +268,7 @@ def _validate_table(self) -> None:
                 "before export."
             )
 
-        # create list of missing or non-defined required columns
+        # check that all required value columns are present
         missing_calculations = []
         for col in _enums.InplaceVolumes.required_value_columns():
             if self._is_column_missing_in_table(col):

tests/test_export_rms/test_export_rms_volumetrics.py

@@ -354,12 +354,11 @@ def test_total_volumes_required(exportvolumetrics, voltable_legacy):
         exportvolumetrics._compute_water_zone_volumes_from_totals(df)
 
 
-@pytest.mark.parametrize("required_col", ["BULK", "PORV", "HCPV"])
+@pytest.mark.parametrize("required_col", _enums.InplaceVolumes.required_columns())
 def test_validate_table_required_col_missing(
     exportvolumetrics, voltable_standard, required_col
 ):
     """Test that the job fails if a required volumetric column is missing"""
-
     df = voltable_standard.drop(columns=required_col)
     exportvolumetrics._dataframe = df