diff --git a/src/ert/_c_wrappers/enkf/ensemble_config.py b/src/ert/_c_wrappers/enkf/ensemble_config.py
index c3e46877350..433951479d3 100644
--- a/src/ert/_c_wrappers/enkf/ensemble_config.py
+++ b/src/ert/_c_wrappers/enkf/ensemble_config.py
@@ -22,7 +22,6 @@
 from ert._c_wrappers.enkf.config.surface_config import SurfaceConfig
 from ert._c_wrappers.enkf.config_keys import ConfigKeys
 from ert.parsing import ConfigValidationError, ConfigWarning, ErrorInfo
-from ert.parsing.context_values import ContextList, ContextValue
 from ert.storage.field_utils.field_utils import Shape, get_shape
 
 logger = logging.getLogger(__name__)
@@ -242,7 +241,7 @@ def __init__(
             self.addNode(self.get_field_node(field, grid_file, dims))
 
     @staticmethod
-    def gen_data_node(gen_data: ContextList[ContextValue]) -> Optional[GenDataConfig]:
+    def gen_data_node(gen_data: List[str]) -> Optional[GenDataConfig]:
         options = _option_dict(gen_data, 1)
         name = gen_data[0]
         res_file = options.get(ConfigKeys.RESULT_FILE)
@@ -255,25 +254,17 @@ def gen_data_node(gen_data: ContextList[ContextValue]) -> Optional[GenDataConfig
         report_steps = rangestring_to_list(options.get(ConfigKeys.REPORT_STEPS, ""))
 
         if os.path.isabs(res_file) or "%d" not in res_file:
-            result_file_context: ContextValue = next(
-                x for x in gen_data if x.startswith("RESULT_FILE:")
-            )
-            raise ConfigValidationError.from_info(
-                ErrorInfo(
-                    filename=result_file_context.token.filename,
-                    message=f"The RESULT_FILE:{res_file} setting for {name} is "
-                    f"invalid - must have an embedded %d and be a relative path",
-                ).set_context(result_file_context)
+            raise ConfigValidationError(
+                f"The RESULT_FILE:{res_file} setting for {name} is "
+                f"invalid - must have an embedded %d and be a relative path"
             )
 
         if not report_steps:
-            raise ConfigValidationError.from_info(
-                ErrorInfo(
-                    filename=gen_data.keyword_token.filename,
-                    message="The GEN_DATA keywords must have REPORT_STEPS:xxxx"
-                    " defined. Several report steps separated with ',' "
-                    "and ranges with '-' can be listed",
-                ).set_context_keyword(gen_data.keyword_token)
+            raise ConfigValidationError(
+                "The GEN_DATA keywords must have "
+                "REPORT_STEPS:xxxx defined. Several "
+                "report steps separated with ',' "
+                "and ranges with '-' can be listed"
             )
 
         gdc = GenDataConfig(name=name, input_file=res_file, report_steps=report_steps)
diff --git a/tests/test_config_parsing/test_parser_error_collection.py b/tests/test_config_parsing/test_parser_error_collection.py
index a2002cd069c..d5f4ce0f383 100644
--- a/tests/test_config_parsing/test_parser_error_collection.py
+++ b/tests/test_config_parsing/test_parser_error_collection.py
@@ -1069,43 +1069,39 @@ def test_that_deprecations_are_handled(contents, expected_errors):
         )
 
 
+@pytest.mark.parametrize("use_new_parser", [True, False])
 @pytest.mark.usefixtures("use_tmpdir")
-def test_that_invalid_ensemble_result_file_errors():
-    assert_that_config_leads_to_error(
-        config_file_contents=dedent(
-            """
+def test_that_invalid_ensemble_result_file_errors(use_new_parser):
+    write_files(
+        {
+            "test.ert": """
 NUM_REALIZATIONS  1
 GEN_DATA RFT_3-1_R_DATA INPUT_FORMAT:ASCII REPORT_STEPS:100 RESULT_FILE:RFT_3-1_R_<ITER>
 
             """
-        ),
-        expected_error=ExpectedErrorInfo(
-            match="must have an embedded %d",
-            line=3,
-            column=61,
-            end_column=89,
-        ),
-    )
+        }
+    ),
+
+    with pytest.raises(ConfigValidationError, match="must have an embedded %d"):
+        _ = ErtConfig.from_file("test.ert", use_new_parser=use_new_parser)
 
 
+@pytest.mark.parametrize("use_new_parser", [True, False])
 @pytest.mark.usefixtures("use_tmpdir")
-def test_that_missing_report_steps_errors():
-    assert_that_config_leads_to_error(
-        config_file_contents=dedent(
-            """
+def test_that_missing_report_steps_errors(use_new_parser):
+    write_files(
+        {
+            "test.ert": """
 NUM_REALIZATIONS  1
 GEN_DATA RFT_3-1_R_DATA INPUT_FORMAT:ASCII RESULT_FILE:RFT_3-1_R%d
 
             """
-        ),
-        expected_error=ExpectedErrorInfo(
-            match="REPORT_STEPS",
-            line=3,
-            column=1,
-            end_column=9,
-        ),
+        }
     )
 
+    with pytest.raises(ConfigValidationError, match="REPORT_STEPS"):
+        _ = ErtConfig.from_file("test.ert", use_new_parser=use_new_parser)
+
 
 @pytest.mark.usefixtures("use_tmpdir")
 def test_that_valid_gen_data_does_not_error():