Improve validation error handling for missing nominal analysis fields in CSV upload

sage_validation/file_validator/forms.py

@@ -245,6 +245,8 @@ class CSVUploadForm(forms.Form):
                 nominal_account_name = row.get(nominal_account_field)
 
                 if not cc or not dep or not nominal_account_name:
+                    errors.append(f"Row {index}: Missing values in '{cc_field}', '{dep_field}', or "
+                                  f"'{nominal_account_field}'.")
                     continue
 
                 cc_type = cost_centre_map.get(cc)