diff --git a/src/datadoc/app.py b/src/datadoc/app.py
index 79440cbd..80cc259f 100644
--- a/src/datadoc/app.py
+++ b/src/datadoc/app.py
@@ -22,6 +22,7 @@
 from datadoc.enums import SupportedLanguages
 from datadoc.frontend.callbacks.register_callbacks import register_callbacks
 from datadoc.frontend.components.alerts import dataset_validation_error
+from datadoc.frontend.components.alerts import naming_convention_warning
 from datadoc.frontend.components.alerts import opened_dataset_error
 from datadoc.frontend.components.alerts import opened_dataset_success
 from datadoc.frontend.components.alerts import saved_metadata_success
@@ -65,6 +66,7 @@ def build_app(app: type[Dash]) -> Dash:
                     opened_dataset_error,
                     saved_metadata_success,
                     opened_dataset_success,
+                    naming_convention_warning,
                     dbc.Tabs(
                         id="tabs",
                         class_name="ssb-tabs",
diff --git a/src/datadoc/config.py b/src/datadoc/config.py
index d30ccec2..824c87ba 100644
--- a/src/datadoc/config.py
+++ b/src/datadoc/config.py
@@ -133,3 +133,8 @@ def get_unit_code() -> int | None:
 def get_organisational_unit_code() -> int | None:
     """The code for the organisational units code list in Klass."""
     return int(_get_config_item("DATADOC_ORGANISATIONAL_UNIT_CODE") or 83)
+
+
+def get_dapla_manual_naming_standard_url() -> str | None:
+    """Get the URL to naming standard in the DAPLA manual."""
+    return _get_config_item("DAPLA_MANUAL_NAMING_STANDARD_URL")
diff --git a/src/datadoc/frontend/callbacks/dataset.py b/src/datadoc/frontend/callbacks/dataset.py
index 2f81183a..d38da967 100644
--- a/src/datadoc/frontend/callbacks/dataset.py
+++ b/src/datadoc/frontend/callbacks/dataset.py
@@ -9,6 +9,7 @@
 from pydantic import ValidationError
 
 from datadoc import state
+from datadoc.backend.dapla_dataset_path_info import DaplaDatasetPathInfo
 from datadoc.backend.datadoc_metadata import DataDocMetadata
 from datadoc.enums import (
     SupportedLanguages,  # noqa: TCH001 import is needed for docs build
@@ -53,11 +54,10 @@ def open_file(file_path: str | None = None) -> DataDocMetadata:
 def open_dataset_handling(
     n_clicks: int,
     file_path: str,
-) -> tuple[bool, bool, str, str]:
+) -> tuple[bool, bool, bool, str, str]:
     """Handle errors and other logic around opening a dataset file."""
     if file_path:
         file_path = file_path.strip()
-
     try:
         state.metadata = open_file(file_path)
     except FileNotFoundError:
@@ -65,6 +65,7 @@ def open_dataset_handling(
         return (
             False,
             True,
+            False,
             f"Filen '{file_path}' finnes ikke.",
             state.current_metadata_language.value,
         )
@@ -72,13 +73,17 @@ def open_dataset_handling(
         return (
             False,
             True,
+            False,
             "\n".join(traceback.format_exception_only(type(e), e)),
             state.current_metadata_language.value,
         )
     if n_clicks and n_clicks > 0:
-        return True, False, "", state.current_metadata_language.value
-
-    return False, False, "", state.current_metadata_language.value
+        dapla_dataset_path_info = DaplaDatasetPathInfo(file_path)
+        if not dapla_dataset_path_info.path_complies_with_naming_standard():
+            return (True, False, True, "", state.current_metadata_language.value)
+        return True, False, False, "", state.current_metadata_language.value
+    # no message
+    return False, False, False, "", state.current_metadata_language.value
 
 
 def process_keyword(value: str) -> list[str]:
diff --git a/src/datadoc/frontend/callbacks/register_callbacks.py b/src/datadoc/frontend/callbacks/register_callbacks.py
index 377190c9..3283ed9c 100644
--- a/src/datadoc/frontend/callbacks/register_callbacks.py
+++ b/src/datadoc/frontend/callbacks/register_callbacks.py
@@ -110,6 +110,7 @@ def callback_accept_dataset_metadata_input(
     @app.callback(
         Output("opened-dataset-success", "is_open"),
         Output("opened-dataset-error", "is_open"),
+        Output("opened-dataset_warning", "is_open"),
         Output("opened-dataset-error-explanation", "children"),
         Output("language-dropdown", "value"),  # Used to force reload of metadata
         Input("open-button", "n_clicks"),
@@ -118,7 +119,7 @@ def callback_accept_dataset_metadata_input(
     def callback_open_dataset(
         n_clicks: int,
         dataset_path: str,
-    ) -> tuple[bool, bool, str, str]:
+    ) -> tuple[bool, bool, bool, str, str]:
         """Open a dataset.
 
         Shows an alert on success or failure.
diff --git a/src/datadoc/frontend/components/alerts.py b/src/datadoc/frontend/components/alerts.py
index d2062544..cbd2de2a 100644
--- a/src/datadoc/frontend/components/alerts.py
+++ b/src/datadoc/frontend/components/alerts.py
@@ -2,25 +2,26 @@
 
 from __future__ import annotations
 
+from datadoc.config import get_dapla_manual_naming_standard_url
 from datadoc.frontend.components.builders import AlertTypes
 from datadoc.frontend.components.builders import build_ssb_alert
 
 dataset_validation_error = build_ssb_alert(
-    AlertTypes.WARNING,
+    AlertTypes.ERROR,
     "dataset-validation-error",
     "Validering feilet",
     "dataset-validation-explanation",
 )
 
 variables_validation_error = build_ssb_alert(
-    AlertTypes.WARNING,
+    AlertTypes.ERROR,
     "variables-validation-error",
     "Validering feilet",
     "variables-validation-explanation",
 )
 
 opened_dataset_error = build_ssb_alert(
-    AlertTypes.WARNING,
+    AlertTypes.ERROR,
     "opened-dataset-error",
     "Kunne ikke åpne datasettet",
     "opened-dataset-error-explanation",
@@ -39,3 +40,11 @@
     "Åpnet datasett",
     "opened-dataset-success-explanation",
 )
+
+naming_convention_warning = build_ssb_alert(
+    AlertTypes.WARNING,
+    "opened-dataset_warning",
+    "Filen følger ikke navnestandard. Vennlist se",
+    "opened-dataset-warning-explanation",
+    link=get_dapla_manual_naming_standard_url(),
+)
diff --git a/src/datadoc/frontend/components/builders.py b/src/datadoc/frontend/components/builders.py
index 457e48c6..2e1f96b0 100644
--- a/src/datadoc/frontend/components/builders.py
+++ b/src/datadoc/frontend/components/builders.py
@@ -26,6 +26,7 @@ class AlertTypes(Enum):
 
     SUCCESS = auto()
     WARNING = auto()
+    ERROR = auto()
 
 
 @dataclass
@@ -42,9 +43,13 @@ def get_type(alert_type: AlertTypes) -> AlertType:
 
 
 ALERT_TYPES = {
+    AlertTypes.ERROR: AlertType(
+        alert_class_name="ssb-dialog error",
+        color="danger",
+    ),
     AlertTypes.WARNING: AlertType(
         alert_class_name="ssb-dialog warning",
-        color="danger",
+        color="warning",
     ),
     AlertTypes.SUCCESS: AlertType(
         alert_class_name="ssb-dialog",
@@ -73,6 +78,7 @@ def build_ssb_alert(  # noqa: PLR0913 not immediately obvious how to improve thi
     message: str | None = None,
     *,
     start_open: bool = False,
+    link: str | None = None,
 ) -> dbc.Alert:
     """Make a Dash Alert according to SSBs Design System."""
     alert = AlertType.get_type(alert_type)
@@ -91,6 +97,7 @@ def build_ssb_alert(  # noqa: PLR0913 not immediately obvious how to improve thi
                 id=content_identifier,
                 children=message,
             ),
+            html.A(link, href=link, target="_blank"),
         ],
         style={"width": "70%"},
     )
diff --git a/tests/frontend/callbacks/test_dataset_callbacks.py b/tests/frontend/callbacks/test_dataset_callbacks.py
index 5fa81274..02f12d49 100644
--- a/tests/frontend/callbacks/test_dataset_callbacks.py
+++ b/tests/frontend/callbacks/test_dataset_callbacks.py
@@ -45,6 +45,11 @@ def file_path():
     return "valid/path/to/file.json"
 
 
+@pytest.fixture()
+def file_path_without_dates():
+    return "valid/path/to/person_data_v1.parquet"
+
+
 @pytest.mark.parametrize(
     ("metadata_identifier", "provided_value", "expected_model_value"),
     [
@@ -278,13 +283,13 @@ def test_open_dataset_handling_normal(
 ):
     state.current_metadata_language = SupportedLanguages.ENGLISH
 
-    opened, show_error, error_msg, language = open_dataset_handling(
+    opened, show_error, naming_standard, error_msg, language = open_dataset_handling(
         n_clicks_1,
         file_path,
     )
-
     assert opened
     assert not show_error
+    assert naming_standard
     assert error_msg == ""
     assert language == "en"
 
@@ -298,12 +303,13 @@ def test_open_dataset_handling_file_not_found(
     state.current_metadata_language = SupportedLanguages.ENGLISH
     open_file_mock.side_effect = FileNotFoundError()
 
-    opened, show_error, error_msg, language = open_dataset_handling(
+    opened, show_error, naming_standard, error_msg, language = open_dataset_handling(
         n_clicks_1,
         file_path,
     )
     assert not opened
     assert show_error
+    assert not naming_standard
     assert error_msg.startswith(f"Filen '{file_path}' finnes ikke.")
     assert language == "en"
 
@@ -317,12 +323,13 @@ def test_open_dataset_handling_general_exception(
     state.current_metadata_language = SupportedLanguages.ENGLISH
     open_file_mock.side_effect = ValueError()
 
-    opened, show_error, error_msg, language = open_dataset_handling(
+    opened, show_error, naming_standard, error_msg, language = open_dataset_handling(
         n_clicks_1,
         file_path,
     )
     assert not opened
     assert show_error
+    assert not naming_standard
     assert error_msg.startswith("ValueError")
     assert language == "en"
 
@@ -333,10 +340,31 @@ def test_open_dataset_handling_no_click(
     file_path: str,
 ):
     state.current_metadata_language = SupportedLanguages.ENGLISH
-    opened, show_error, error_msg, language = open_dataset_handling(0, file_path)
-
+    opened, show_error, naming_standard, error_msg, language = open_dataset_handling(
+        0,
+        file_path,
+    )
     assert not opened
     assert not show_error
+    assert not naming_standard
+    assert error_msg == ""
+    assert language == "en"
+
+
+@patch(f"{DATASET_CALLBACKS_MODULE}.open_file")
+def test_open_dataset_handling_naming_standard(
+    open_file_mock: Mock,  # noqa: ARG001
+    n_clicks_1: int,
+    file_path_without_dates: str,
+):
+    state.current_metadata_language = SupportedLanguages.ENGLISH
+    opened, show_error, naming_standard, error_msg, language = open_dataset_handling(
+        n_clicks_1,
+        file_path_without_dates,
+    )
+    assert opened is True
+    assert not show_error
+    assert naming_standard
     assert error_msg == ""
     assert language == "en"